• Afro-American Genealogical & Historical Society of Chicago, P.O. Box 37-7651, Chicago, IL 60637
  • American Hist'l Society of Germans from Russia, Northern Illinois Chapter, 704 Suffolk Ave., Westchester, IL 60154-2738.
  • Alton Area Historical Society, P.O. Box 971, Alton, IL 62002-0971
  • Andover Historical Society, 340 4th Street, P.O. Box 197, Andover, IL 61233-0197
  • Arlington Heights Historical Society, 500 N. Vail, Arlington Heights, IL 60004-5912
  • Association of Illinois Museums & Historical Societies, 1 Old State Capitol Plaza, Springfield, IL 62701-1507
  • Augustana Historical Society 639 38th Street, Rock Island, IL 61201-2296
  • Aurora Historical Society & Museum, 317 Cedar Street, P.O. Box 905, Aurora, IL 60506
  • Avon Historical Society, P.O. Box 483, Avon, IL 61415-0483
  • Barrington Area Historical Society, 212-218 W. Main Street, Barrington, IL 60010
  • Bartlett Historical Society, 128 S. Main Street, Village Hall, P.O. Box 8257, Bartlett, IL 60103-8257
  • Beecher Community Historical Society, P.O. Box 1469, Beecher, IL 60401-1469
  • Bellflower Genealogical & Historical Society, Latcha Street, RR #1, Box 17, Bellflower, IL 61724
  • Bensenville Historical Society, 200 S. Church Road, Bensenville, IL 60106
  • Berwyn Historical Society, 1241 Oak Park Avenue, P.O. Box 479, Berwyn, IL 60402
  • Bethalto Historical Museum, 213 N. Prairie, Bethaldo, IL 62010
  • Blackhawk Folklore Society, 660 34th Avenue, Moline, IL 61265-5870
  • Blackhawk Genealogical Society, P.O. Box 3912, Rock Island, IL 61204-3912
  • Bloomingdale Historical Society, 101 Fairfield Way, Bloomingdale Library, Bloomingdale, IL 60108
  • Blue Island Historical Society, 2433 York Street, Blue Island, IL 60406-2094
  • Bolingbrook Historical Society, 162 N. Canyon Drive, Bolingbrook, IL 60440-1526
  • Bond County Genealogical Society, P.O. Box 172, Greenville, IL 62246
  • Boone County Historical Society Museum, 311 Whitney Blvd., Belvidere, IL 61008-3609
  • Bourbonnais Grove Historical Society, Stratford Dr. at IL Rte. 102, P.O. Box 311, Bourbonnais, IL 60914-0311
  • Brimfield Area Historical Society, P.O. Box 55, Brimfield, IL 61517
  • British Interest Group of Wisconsin and Illinois, PO BOX 192, Richmond IL 60071-0192
  • Bureau County Genealogical Society, P.O. Box 402, Princeton, IL 61356-0402
  • Bureau County Historical Society Museum, 109 Park Avenue West, Princeton, IL 61356-1927
  • Bushnell Area Historical Society, 300 Miller Street, Bushnell, IL 61422
  • Cairo Historical Association, 2700 Washington Avenue, Cairo, IL 62914
  • Calhoun County Historical Society, P.O. Box 327, Hardin, IL 62047-0327
  • Calumet City Historical Society Museum, 760 Wentworth Avenue, P.O. Box 1917, Calumet City, IL 60409-3515
  • Cambridge Historical Society, RR #2, Box 96, Cambridge, IL 61238-9633
  • Carol Stream Historical Society, 391 Illini Drive, Gretna Museum, Carol Stream, IL 60188-1962
  • Carroll County Genealogical Society, P.O. Box 347, Savanna, IL 61074
  • Cary-Grove Historical Society, 335 Wooded Knoll Drive, Cary , IL 60013
  • Cass County Historical & Genealogical Society, P.O. Box 11, Virginia, IL 62691
  • Cedarville Area Historical Society, Cherry Street, P.O. Box 46, Cedarville, IL 61013-0046
  • Champaign County Genealogical Society, Champaign Co. Hist'l Archives, 201 S. Race St., Urbana, IL 61801
  • Champaign County Historical Society, 201 S. Race, Urbana, IL 61801-3283
  • Champaign County Historical Museum, 111A E. University Avenue, Champaign, IL 61820-4177
  • Chapin Community Historical Society, Superior Street, Chapin, IL 62628
  • Chatsworth Historical Society, 424 E. Locust Street, P.O. Box 755, Chatsworth, IL 60921-0755
  • Chicago and Northwestern Historical Society, 8703 N. Olcutt Avenue, Niles, IL 60648-2023
  • Chicago Genealogical Society, P.O. Box 1160, Chicago, IL 60690
  • Chicago Heights Historical Society, 25 W. 15th Street, Chicago Heights, IL 60411
  • Chicago Historical Society, Clark St. at North Avenue, Chicago, IL 60614
  • Chillicothe Historical Society, P.O. Box 181, Chillicothe, IL 61523-0181
  • Christian County Genealogical Society, Hwys 48 & 29, P.O. Box 174, Taylorville, IL 62568-0174
  • Christian County Historical Society, Rte 29 & Rte 48, P.O. Box 254, Taylorville, IL 62568-0254
  • Christian County Genealogical Society, P.O. Box 174, Taylorville, IL 62568
  • Clark County Genealogical Society, 309 Maple Street, P.O. Box 153, Marshall, IL 62441
  • Clay County Genealogical Society, P.O. Box 94, Louisville, IL 62858
  • Clark County Historical Society, P.O. Box 207, Marshall, IL 62441-0207
  • Clay County Genealogical Society, West Side Square, P.O. Box 94, Louisville, IL 62858-0094
  • Clinton County Historical Society, 1091 Franklin Street, Carlyle, IL 62231
  • Coles County Genealogical Society, P.O. Box 592, Charleston, IL 61920
  • Coles County Historical Society, 800 Hayes Avenue, Charleston, IL 61920-3449
  • Colonel Davenport Historical Foundation, Rock Island Arsenal, Rock Island, IL 61299
  • Columbia Historical Society, 11562 Bluff Road, Columbia, IL 62236
  • Cook County Friends of Genealogy, 60 West Walton Street, Chicago, IL 60610-3380
  • Council Northeastern Illinois Genealogical Society, 3629 West 14th Place, Midlothian, IL 60445
  • Crawford County Genealogical Society, P.O. Box 120, Robinson, IL 62454
  • Crawford County Historical Society, P.O. Box 554, Robinson, IL 62454-0554.
  • Czech & Slovak American Genealogy Society of Illinois
  • Cumberland County Genealogical Society, P.O. Box 393, Greenup, IL 62428
  • Czech & Slovak American Genealogical Society of Illinois (CSAGSI), P.O. Box 313, Sugar Grove, IL 60554
  • Danvers Historical Society, RR #2, Box 9, Danvers, IL 61732
  • Darien Historical Society, 7422 S. Cass Avenue, P.O. Box 2178, Darien, IL 60561-2178
  • Decatur Genealogical Society, 356 N. Main Street, P.O. Box 1548, Decatur, IL 62525-1548 email DGS@Dellnet.com
  • Deerfield Area Historical Society, 450 Kipling Place, P.O. Box 520, Deerfield, IL 60015
  • DeKalb County Historical & Genealogical Society, P.O. Box 295, Sycamore, IL 60178
  • Delavan Community Historical Society, Locust Street, Delavan, IL 61734-0612
  • Des Plaines Genealogical Questers, 789 Pearson Street, Des Plaines, IL 60016
  • Des Plaines Historical Society & Museum, 789 Pearson Street, Des Plaines, IL 60016-4506
  • DeWitt County Genealogical Society, P.O. Box 632, Clinton, IL 61727
  • Douglas County Genealogical Society, P.O. Box 113, Tuscola, IL 61953
  • Downers Grove Historical Society, 831 Maple Avenue, Downers Grove, IL 60515
  • Dwight Genealogical Society, Serving the Greater Livingston County Area, P.O. Box 315, Dwight, Illinois 60420. E-mail: dwight_genealogical@yahoo.com
  • Dundee Township Historical Society, 426 Highland Avenue, Dundee, IL 60118-1225
  • Dunton Genealogical Society, 500 North Dunton, Arlington Heights, IL 60004
  • DuPage County (IL) Genealogical Society, P.O. Box 133, Lombard, IL 60148
  • DuPage County Historical Museum, 102 E. Wesley Street, Wheaton, IL 60187
  • DuPage County Historical Society, 617 White Oak Drive, Roselle, IL 60172
  • Dwight Genealogical Society, P.O. Box 315, Dwight, IL 60420
  • Dwight Historical Society, 120 E Chippewa, P.O. Box 7, Dwight, IL 60420-1302
  • Earlville Community Historical Society, 205 Winthrop Street, P.O. Box 420, Earlville, IL 60518-0420
  • East Side Historical Society, 3658 E. 106th Street, Chicago, IL 60617-6611
  • Edgar County Genealogy Society, P.O. Box 304, Paris, IL 61944
  • Edgar County Historical Society, 408 N. Main Street, Paris, IL 61944-1549
  • Edgebrook Historical Society, 6173 N. McClellan, Chicago, IL 60646-4013
  • Edgewater Historical Society, 6042 N. Paulina Street, Chicago, IL 60660-2308
  • Edwards County Historical Society, 212 W. Main Street, P. O. Box 205, Albion, IL 62806
  • Effingham County Genealogical Society, P.O. Box 1166, Effingham, IL 62401-1166
  • Effingham Regional Historical Society, P.O. Box 1352, Effingham, IL 62401-1352
  • Elburn & Countryside Historical Society, 525 N. Main, P.O. Box 115, Elburn, IL 60119-0115
  • Elgin Genealogical Society , P.O. Box 1418, Elgin, IL 60121-1418
  • Elgin Area Historical Society & Museum, 360 Park Street, Elgin, IL 60120-4455
  • Elk Grove Historical Society, 499 Biesterfield Road, Elk Grove, IL 60007
  • Elkhart Historical Society, 116 N. Latham, P.O. Box 225, Elkhart, IL 62634-0225
  • Elmwood Historical Society Museum, 302 N. Magnolia, Elmwood, IL 61529
  • Elmwood Park Historical Society, 4 Conti Parkway, Elmwood Park, IL 60707
  • Evanston Historical Society, 225 Greenwood Street, Evanston, IL 60201
  • Fairmount Jamaica Historical Society, 116 S. Main Street, Fairmount, IL 61841
  • Farmer City Genealogical & Historical Society, 226 S. Main, P.O. Box 173, Farmer City, IL 61842
  • Fayette County Genealogical Society, P.O. Box 177, Vandalia, IL 62471
  • FGS Forum Editorial Office, P.O. Box 271, Western Springs, IL 60558-0271
  • Fern Dell Historical Association, 502 Chicago Road, P.O. Box 254, Newark, IL 60541-0254
  • Flagg Creek Historical Society, 7425 S. Wolf Road, Burr Ridge, IL 60525
  • Flagg Creek Historical Society, P.O. Box 227, Western Springs, IL 60558
  • Flagg Township Historical Society & Museum, 600 N. 10th Street, Rochelle, IL 61068
  • Ford County Historical Society, P.O. Box 213, Paxton, IL 60957-0213
  • Fort LaMotte Genealogical & Historical Society, 116 S. Main , Palestine, IL 62451-1244
  • Fox Lake Area Historical Society, Attn: J. Tronvig, Treasurer, P.O. Box 4, Fox Lake, IL 60020
  • Fox Valley Genealogical Society,   P. O. Box 5435, Naperville, IL 60567 - covers portions of DuPage, Kane, Kendall and Will Counties in Illinois.
  • Frankfort Area Genealogical Society, 2000 E. St. Louis Street, P.O. Box 427, West Frankfort, IL 62896-0427
  • Frankfort Area Historical Museum & Society, 2000 E. St. Louis Street, West Frankfort, IL 62896-1647
  • Frankfort Area Historical Society, 132 Kansas Street, P.O. Box 546, Frankfort, IL 60423-0546
  • Franklin County Genealogical Society, P.O. Box 524, West Frankfort, IL 62896
  • Franklin County Historical Society, 17664 Ross Briley Road, Thompsonville, IL 62890-2310
  • Franklin Grove Area Historical Society, 110 W. Front, Mt. Morris, IL 61054
  • Freeburg Historical & Genealogical Society, P.O. Box 69, Freeburg, IL 62243-0069
  • Fulton County Historical & Genealogical Society, 45 North Park Drive, Canton, IL 61520
  • Galena Historical Society & Museum, 211 S. Bench Street, Galena, IL 61036-2297
  • Galesburg Historical Society, 1166 N. Prairie, Galesburg, IL 61401-2758
  • Galewood-Montclare Historical Society, 1705 N. Nashville Avenue, Chicago, IL 60707-3904
  • Gallatin County Historical Society, P.O. Box 693, Shawneetown, IL 62984'
  • Galva Historical Society, P.O. Box 24, Galva, IL 61434-0024
  • Garden Prairie Genealogical/Historical Society, P.O. Box 115, Garden Prairie, IL 61038-0115
  • Garfield Heritage Society, 3N016 Garfield Road, P.O. Box 403, LaFox, IL 60147-0403
  • Genealogical Forum of Elmhurst, 120 East Park Avenue, Elmhurst, IL 60126
  • Genealogy Society of Southern Illinois, c/o John A. Logan College, Route 2, Carterville, IL 62918  - houses their collection of genealogical materials in the John A. Logan College Library.
  • Geneseo Historical Association, 212 State, Geneseo, IL 61254-1455
  • Geneva Historical Society, 400 Wheeler Park Drive, P.O. Box 345, Geneva, IL 60134-0345
  • Glen Ellyn Historical Society, 557 Geneva Road, P.O. Box 283, Glen Ellyn, IL 60138-0283
  • Glencoe Historical Society, 999 Green Bay Road, Glencoe, IL 60022-1263
  • Glenview Area Historical Society, 1121 Waukegan Road, Glenview, IL 60025
  • Golden Historical Society, P.O. Box 148 , Golden, IL 62339-0148
  • Goode-Barren Historical Society, 201 E. Callie Street, P.O. Box 1024, Sesser, IL 62884-0944
  • Grayslake Historical Society, 164 Hawley, P.O. Box 185, Grayslake, IL 60030-0185
  • Great River Genealogical Society, 526 Jersey, Quincy Public Library, Quincy, IL 62301
  • Greater Harvard Area Historical Society, 308 N. Hart Blvd., P.O. Box 505, Harvard, IL 60033-0505
  • Greene County Genealogical & Historical Society, P.O. Box 137, Carrollton, IL 62016
  • Griggsville Area Genealogical & Historical Society, P.O.Box 75, Griggsville, IL 62340
  • Hamilton County Historical Society, 205 N. Washington Street, McCoy Mem. Lib., McLeansboro, IL 62859
  • Hampton Historical Society, 601 1st Avenue, P.O. Box 68, Hampton, IL 61256
  • Hancock County Genealogical & Historical Society, P.O. Box 68, Carthage, IL 62321
  • Hanover Park/Ontario Historical Society, 2121 W. Lake Street, Hanover Park, IL 60103-4398
  • Hardin County Historical & Genealogical Society, P.O. Box 72, Elizabethtown, IL 62931
  • Henderson County Historical Society Museum, RR #1, Box 130, Oquawka, IL 61469-9711
  • Henry County Genealogical Society, P.O. Box 346, Kewanee, IL 61443
  • Henry County Historical Society/Museum, P.O. Box 48 , Bishop Hill, IL 61419
  • Henry Historical & Genealogical Society, 610 North Street, Henry, IL 61537
  • Heritage League of Northwest Illinois, 140 W. Benton Street, c/o Stockton Lib., Stockton, IL 61085-1312
  • Highland Historical Society, 1739 Broadway, P.O. Box 51, Highland, IL 62249-0051
  • Highland Park Historical Society, 326 Central Avenue, P.O. Box 56, Highland Park, IL 60035
  • Hinsdale Historical Society, 15 S. Clay Street, P.O. Box 336, Hinsdale, IL 60522-0336
  • Historical Network of DuPage County, 919 Burlington Avenue, Lisle, IL 60532
  • Historical Society of Arlington Heights, 110 W. Fremont, Arlington Heights, IL 60004-5912
  • Historical Society of Cicero, 2423 S. Austin Blvd., Cicero, IL 60804
    Historical Society of Elmwood Park, 2823 N. 77th Avenue, Elmwood Park Lib., Elmwood Park, IL 60635-1408
  • Historical Society of Forest Park, 519 Jackson Blvd., Forest Park, IL 60130
  • Historical Society of Fort Hill Country, P.O. Box 582, Mundelein, IL 60060
  • Historical Society of Greater Peotone, 213 W. North Street, Peotone, IL 60468-9153
  • Historical Society of Montgomery County, 904 S. Main Street, Hillsboro, IL 62049-1738
  • Historical Society of Quincy & Adams County, 425 S. 12th Street, Quincy, IL 62301
  • Historical Society of Washington County , 326 S. Kaskaskia Street, P.O. Box 9, Nashville, IL 62263-0009
  • Homer Historical Society & Museum, 107 N. Ellen Street, Homer, IL 61849
  • Homewood Historical Society & Museum, 2035 W. 183rd Street, P.O. Box 1144, Homewood, IL 60430-1044
  • Hoopeston Historical Society, 617 E. Washington, Hoopeston, IL 60942-1659
  • Huguenot Society of Illinois
  • Hyde Park Historical Society, 5529 S. Lake Park, Chicago, IL 60637-1718
  • Illinois Mennonite Historical & Genealogical Society, P.O. Box 819, Metamora, IL 61548
  • Illinois State Genealogical Society (ISGS), P.O. Box 10195, Springfield, IL 62791-0195
  • Illiana Genealogical & Historical Society, 215 W. North Street, P.O. Box 207, Danville, IL 61834-0207
  • Illinois Heritage Association, 601 1/2 E. Green Street, Champaign, IL 61820
  • Illinois State Historical Society, 1 Old State Capitol Plaza, Springfield, IL 62701-1507
  • Illiana Genealogical & Historical Society, 215 W. North Street, P.O. Box 207, Danville, IL 61834-0207  email IGHS@danville.net
  • Illiana Jewish Genealogical Society, 3416 Ithaca, Olympia Fields, IL 60461
  • Illinois Society Sons of the American Revolution
  • Iroquois County Genealogical Society, Old Courthouse, 103 West Cherry Street, Watseka, IL 60970
  • Iroquois County Historical Society, 103 W. Cherry Street, Watseka, IL 60970-1524
  • Irving Park Historical Society, 4122 N. Kedvale, P.O. Box 34749, Chicago, IL 60634-4749
  • Itasca Historical Society & Museum, 101 N. Catalpa, P.O. Box 101, Itasca, IL 60143-0101
  • Jackson County Historical Society, 1616 Edith Street, P.O. Box 7, Murphysboro, IL 62966
  • Jacksonville Area Genealogical & Historical Society, P.O. Box 21, Jacksonville, IL 62650
  • Jasper County Genealogical & Historical Society, 100 South VanBuren, Newton, IL 62448
  • Jefferson County Genealogical Society, 101 S. Seventh St., Mt. Vernon, IL 62864-4187
  • Jefferson County Historical Village & Museum, 1411 N. 27th Street, P.O. Box 106, Mt. Vernon, IL 62864-0106
  • Jersey County Genealogical Society, P.O. Box 12, Jerseyville, IL 62052
  • Jersey County Historical Society, 108 N. Lafayette Street, Jerseyville, IL 62052-1612
  • Jewish Genealogical Society of Illinois, P.O. Box 515, Northbrook, IL 60065- 0515
  • Johnson County Genealogical & Historical Society, PO Box 1207 - Vienna, IL 62995
  • Joliet Area Historical Society & Museum, 17 E. Van Buren Street, P.O. Box 477, Joliet, IL 60431-1211
  • Joseph Smith Historic Center, P.O. Box 338, Nauvoo, IL 62354-0338
  • Kane County Genealogical Society, P.O. Box 504, Geneva, IL 60134-0504
  • Kankakee Valley Genealogical Society, 801 S. Eighth Avenue, Kankakee, IL 60901
  • Kendall County Genealogical Society, P.O. Box 123, Yorkville, IL 60560-0123
  • Kendall County Historical Society, P.O. Box 123, Yorkville, IL 60560-0123
  • Kenilworth Historical Society, 415 Kenilworth Avenue, P.O. Box 181, Kenilworth, IL 60043-1134
  • Kewanee Historical Society, 211 Chestnut Street, Kewanee, IL 61443-2119
  • Kishwaukee Genealogists Newsletter, P.O. Box 5503, Rockford, IL 61125-5503
  • Knox County Genealogical Society, P.O. Box 13, Galesburg, IL 61401-0013
  • Knox County Historical Society, P. O. Box 1757, Galesburg, IL 61402-1757
  • LaGrange Area Historical Society, 444 S. LaGrange Road, LaGrange, IL 60525-2448
  • LaHarpe Historical & Genealogical Society, P.O. Box 289, LaHarpe, IL 61450
  • Lake County Genealogical Society, P.O. Box 721, Libertyville, IL 60048-0721
  • LaSalle County Genealogical Society, P.O. Box 534, Ottawa, IL 61350
  • Lake Forest-Lake Bluff Historical Society, 400 E. Illinois Road, P.O. Box 82, Lake Forest, IL 60045
  • Lake in the Hills Historical Society, 183 Hilltop Drive, Lake in the Hills, IL 60102
  • Lake-McHenry County Historical Alliance, 27277 N. Forest Preserve Road, Wauconda, IL 60084-2016
  • Lakes Region Historical Society, 817 N. Main Street, P.O. Box 240, Antioch, IL 60002-0240
  • Lansing Historical Museum & Society, 2750 Indiana Avenue, P.O. Box 1776, Lansing, IL 60438
  • LaSalle County Genealogical Society, 115 W. Glover Street, P.O. Box 534, Ottawa, IL 61350
  • LaSalle County Historical Society Museum, Mill & Canal Street, P.O. Box 278, Utica, IL 61373-0278
  • Lawrence County Genealogical Society, R.R.1, Box 44, Bridgeport, IL 62417
  • Lawrence County Historical Society, 1012 9th Street, Lawrenceville, IL 62439
  • Lebanon Historical Society, 309 W. St. Louis Street, Lebanon, IL 62254-0126
  • Lee County Genealogical Society, P.O. Box 63, Dixon, IL 61021-0063
  • Lee County Historical Society, 113 Madison Avenue, P.O. Box 58, Dixon, IL 61021-0058
  • Lemont Area Historical Society, P. O. Box 126, Lemont, IL 60439
  • Lena Area Historical Society, 427 W. Grove Street, P.O. Box 620, Lena, IL 61048
  • Lewis & Clark Genealogical Society, P.O. Box 485, Godfrey, IL 62035-0485
  • Lexington Genealogical & Historical Society, 318 W. Main St., Lexington, IL 61753
  • Leyden Historical Society, P.O. Box 506, Franklin Park, IL 60131
  • Libertyville-Mundelein Historical Society, 413 N. Milwaukee Avenue, Libertyville, IL 60048-2280
  • Lisle Station Park/Heritage Society, 919 Burlington Avenue, Lisle, IL 60532
  • Livingston County Historical Society, P.O. Box 680, Pontiac, IL 61764-0999
  • Lithuanian American Genealogy Society, c/o Balzekas Museum, 6500 South Pulaski, Chicago, IL 60629
  • Logan County Genealogical & Historical Society, P.O. Box 283, Lincoln, IL 62656
  • Lombard Historical Museum & Society, 23 W. Maple Street, Lombard, IL 60148-2512
  • Long Grove Historical Society, Box 3110 RFD, Long Grove, IL 60047
  • Lyndon Historical Society, 405 4th Street, West, P.O. Box 112, Lyndon, IL 61261-0112
  • Lyons Historical Commission, 3910 Barrypoint Road, P.O. Box 392, Lyons, IL 60534
  • Mackinaw Historical Society, RR #1, Box 260, Mackinaw, IL 61755-9637
  • Macon County Historical Society, 5580 N. Fork Road, Decatur, IL 62521
  • Macoupin County Genealogical Society, P.O. Box 95, Staunton, IL 62088
  • Macoupin County Historical Society, 920 W. Breckinridge Street, P.O. Box 432, Carlinville, IL 62626-0432
  • Madison County Genealogical Society, P.O. Box 631, Edwardsville, IL 62025
  • Madison County Historical Museum & Library, 715 N. Main Street, Edwardsville, IL 62025
  • Manhattan Township Historical Society, 240 Whitson, P.O. Box 53, Manhattan, IL 60442
  • Manito Historical Society, 206 W. State Street, P.O. Box 304, Manito, IL 61546-0304
  • Manteno Area Historical Society, 192 W. 3rd, Manteno, IL 60950-1104
  • Marion County Genealogical & Historical Society, P.O. Box 342, Salem, IL 62881
  • Marissa Genealogical & Historical Society, P.O. Box 47, Marissa, IL 62257-0047
  • Marshall County Historical Society, 314 5th Street, P.O. Box 123, Lacon, IL 61540-0123
  • Mascoutah Historical Society, 504 N. Jefferson, Mascoutah, IL 62258
  • Mason County Genealogical & Historical Society, P.O. Box 246, Havana, IL 62644
  • Massac County Genealogical Society, P.O. Box 1043, Metropolis, IL 62960
  • Massac County Historical Society, 23 Chick Street, Metropolis, IL 62960-2467
  • Matteson Historical Society, 813 School Avenue, Matteson, IL 60443-1849
  • Maywood Historical Society, 202 S. 2nd Avenue, Maywood, IL 60153-2304
  • McDonough County Genealogical Society, P.O. Box 202, Macomb, IL 61455
  • McDonough County Historical Society, 408 S. Randolph, Macomb, IL 61445
  • McHenry County Genealogical Society, P.O. Box 184, Crystal Lake, IL 60039-0184
  • McHenry County Historical Society, 6422 Main Street, P.O. Box 434, Union, IL 60180-0434
  • McLean County Genealogical Society, P.O. Box 488, Normal, IL 61761-0488
  • Mercer County Historical Society, 1406 SE 2nd Ave., Aledo, IL 61231-2504
  • Meredosia Area Historical & Genealogical Society, P.O. Box 304, Meredosia, IL 62665
  • Midlothian Historical Society, 14609 Springfield, Midlothian, IL 60445
  • Monroe County Genealogical Society, P. O. Box 381, Columbia, IL 62236
  • Monroe County Historical Society, 700 S. Church Street, P.O. Box 48, Waterloo, IL 62298-0048
  • Montgomery County Genealogical Society, P.O. Box 212, Litchfield, IL 62056
  • Morgan Area Genealogical Association, P.O. Box 84, Jacksonville, IL 62651-0084
  • Morgan County Historical Society, 234 N. Webster, Jacksonville, IL 62650-1870
  • Morrison Historical Society, 229 E. Main Street, P.O. Box 1, Morrison, IL 61270-0001
  • Morrisonville Historical Society, 604 Carlin Street, P.O. Box 227, Morrisonville, IL 62546-0227
  • Morton Grove Historical Society, 6240 Dempster Street, P.O. Box 542, Morton Grove, IL 60053
  • Moultrie County Genealogical & Historical Society, P.O. Box M M, Sullivan, IL 61951
  • Moweaqua Area Historical Society, 130 W. Main Street, Moweaqua, IL 62550
  • Mt. Greenwood Historical Society, 11010 S. Kedzie Avenue, Chicago, IL 60655-2222
  • Mt. Prospect Historical Society, 101 S. Maple Street, Mt. Prospect, IL 60056-3229
  • Mt. Vernon Genealogical Society, 101 S. Seventh Street, c/o C.E. Brehm Lib., Mt. Vernon, IL 62864-4187
  • Navoo Historical Society, Nauvoo State Park, P.O. Box 69, Nauvoo, IL 62354-0069
  • New Boston Museum & Historical Society, 302 Main Street, P.O. Box 284, New Boston, IL 61272-0284
  • New Lenox Area Historical Society, 516 S. Cedar Road, c/o New Lenox Lib., New Lenox, IL 60451-1796
  • Newport Township Historical Society, Wadsworth Road, P.O. Box 98, Wadsworth, IL 60038-0098
  • Niles Historical Society-Museum, 8970 N. Milwaukee Avenue, Niles, IL 60714-1737
  • North Central Illinois Genealogical Society, P.O. Box 4635, Rockford, IL 61110
  • North Suburban Genealogical Society, 768 Oak Street, Winnetka, IL 60093
  • Northbrook Historical Society, 1776 Walters Avenue, P.O. Box 2021, Northbrook, IL 60065-2021
  • Northeastern Illinois Historical Council (N.E.I.L), 1720 Wildberry Drive, Glenview, IL 60025
  • Northern Illinois Historical Society, 505 Midlothian Road, Mundelein, IL 60060-2633
  • Northern Will County Genealogical Society, 603 Derbyshire Lane, Bolingbrook, IL 60439
  • Northwest Suburban Council of Genealogists, P.O. Box A C, Mount Prospect, IL 60056
  • Norwood Park Historical Society, 5624 N. Newark Avenue, Chicago, IL 60631-3137
  • Oak Brook Historical Society, P.O. Box 3821, Oak Brook, IL 60522-3821
  • Oak Forest Historical Society, 15440 S. Central Avenue, Oak Forest City Hall, Oak Forest, IL 60452
  • Oak Park/River Forest Historical Society, 217 Home Avenue, P.O. Box 771, Oak Park, IL 60303
  • Oakland Historical Foundation, P.O. Box 431, Oakland, IL 61943-0431
  • Odell Prairie Trails Historical & Genealogical Society, P.O. Box 82, Odell, IL 60460
  • O'Fallon Historical Society, Inc., 101 W. State Street, P.O. Box 344, O'Fallon, IL 62269-0344
  • Ogle County Genealogical Society, P.O. Box 251, Oregon, IL 61061
  • Palatines to America, Illinois Chapter, P.O. Box 3884, Quincy, IL 62301
  • Ogle County Historical Society, 311 N. 6th Street, P.O. Box 183, Oregon, IL 61061-0183
  • Old Edgebrook Historical Society, 6173 N. McClellan Avenue, Chicago, IL 60646
  • Old Six Mile Historical Society, 3279 Maryville Road, P.O. Box 483, Granite City, IL 62040-0483
  • Olmsted Historical Society, P.O. Box 64, Olmsted, IL 62970-0064
  • Orland Park Historical Society, 14228 Union Avenue, Orland Park, IL 60462-2011
  • Palatine Historical Society, 224 E. Palatine Road, P.O. Box 134, Palatine, IL 60074
  • Palos Heights Historical Society, 7607 College Drive, Palos Heights, IL 60463
  • Palos Historical Society, 12330 Forest Glen Blvd., Palos Park, IL 60464
  • Park Forest Historical Society, 400 Lakewood Blvd., Park Forest, IL 60466-1684
  • Park Ridge Historical Society, 41 W. Prairie Avenue, Park Ridge, IL 60068
  • Pecatonia Historical Society, P.O. Box 298, Pecatonia, IL 61063-0599
  • Peoria Genealogical Society, P.O. Box 1489, Peoria, IL 61655
  • Peoria Historical Society, 942 N. E. Glen Oak Avenue, Peoria, IL 61603-3298
  • Perry County Historical Society, 108 W. Jackson Street, Pinckneyville, IL 62274
  • Piatt County Genealogical & Historical Society, P.O. Box 111, Monticello, IL 61856
  • Pike County Historical Society & Museum, 400 E. Jefferson, P.O. Box 44 , Pittsfield, IL 62363-0044
  • Pike/Calhoun Genealogical Society, P.O. Box 104, Pleasant Hill, IL 62366
  • Piper City Community Historical Society, P.O. Box 32, Piper City, IL 60959
  • Plainfield Historical Society Museum, 217 E. Main Street, P.O. Box 291, Plainfield, IL 60544
  • Polish Genealogical Society, 984 N. Milwaukee Avenue, Chicago, IL 60622
  • Polo Historical Society, 125 N. Franklin Street, Polo, IL 61064-1506
  • Pope County Historical Society, 523 Main Street, P.O. Box 837, Golconda, IL 62938-0837
  • Prophetstown Area Historical Society, 320 Washington Street, Prophetstown, IL 61277
  • Putnam County Historical Society, Hennepin, IL 61327
  • Randolph County Genealogical Society, 600 State Street, Suite 306, Chester, IL 62233
  • Randolph County Historical Society, RR #1, Box 356, Sparta, IL 62286
  • Ravenswood-Lake View Historical Society, 4455 N. Lincoln Avenue, Chicago, IL 60625-2192
  • Richland County Genealogical & Historical Society, P.O. Box 202, Olney, IL 62450
  • Ridge Historical Society, 10621 S. Seeley Avenue, Chicago, IL 60643-2618
  • Riverdale Historical Society, 208 W. 144th Street, c/o Riverdale Library, Riverdale, IL 60627
  • Riverside Historical Commission & Museum, 27 Riverside Road, Riverside, IL 60546-2264
  • Robbins Historical Society, 13822 S. Central Park Avenue, P.O. Box 1561, Robbins, IL 60472-1561
  • Rock Island County Historical Society, 822 11th Avenue, P.O. Box 632, Moline, IL 61265-0632
  • Rockford Historical Society, 6799 Guilford, Rockford, IL 61110
  • Rockton Township Historical Society, 529 Green Street, P.O. Box 37, Rockton, IL 61072
  • Rogers Park/West Ridge Historical Society, 2555 W. Farewell Avenue, Chicago, IL 60645-5422
  • Romeoville Area Historical Society, Romeodale Fountaindale Lib., P.O. Box 7504, Romeoville, IL 60446-0504
  • Roselle Historical Foundation, 102 S. Prospect, Roselle, IL 60172
  • Rossville Historical Society, 108 W. Attica Street, P.O. Box 263, Rossville, IL 60963
  • Saline County Genealogical Society, P.O. Box 4, Harrisburg, IL 62946
  • Saline County Historical Society/ Area Museum, 1600 S. Feazel, P.O. Box 55, Harrisburg, IL 62946-0055
  • Sandwich Historical Society, P.O. Box 82, Sandwich, IL 60548
  • Sangamon County Genealogical Society, P.O. Box 1829, Springfield, IL 62705
  • Sangamon County Historical Society, 308 E. Adams Street, Springfield, IL 62701-1403
  • Schaumburg Genealogical Society, 32 West Library Lane, Schaumburg, IL 60194-3421
  • Schiller Park Historical Commission, 9526 Irving Park Road, Schiller Park, IL 60176
  • Schuyler-Brown Genealogical Society, 200 South Congress, Rushville, IL 62681
  • Scott County Historical Society, P.O. Box 85 , Winchester, IL 62694-0085
  • Sheffield Historical Society, 235 Reed Street, Sheffield, IL 61361-0103
  • Shelby County Historial and Genealogical Society, P.O. Box 286, Shelbyville, IL 62565
  • Sidell Community Historical Society, P.O. Box 42, Sidell, IL 61876
  • Sidney Historical Society, 1985 CR 600N, P.O. Box 87, Sidney, IL 61877-9712
  • Skokie Historical Society & Heritage Museum, 8031 Floral Avenue, Skokie, IL 60077
  • Society of Colonial Wars in the State of Illinois
  • Society of the War of 1812 in the State of Illinois
  • Sons of the Revolution in the State of Illinois
  • Sons of Union Veterans - Department of Illinois
  • South Beloit Historical Society, 440 Grove Avenue, South Beloit, IL 61080-1949
  • South Holland Historical Society, P.O. Box 48, South Holland, IL 60473-0048
  • South Suburban Genealogical & Historical Society, P.O. Box 96, South Holland, IL 60473-0096 - Covers southern part of Cook Co. and the northern part of Will County.
  • St. Clair County Genealogical Society, P.O. Box 431, Belleville, IL 62222-0431
  • St. Clair County Historical Society, 701 E. Washington Street, Belleville, IL 62220
  • Stark County Genealogical Society, P.O. Box 83, Toulon, IL 61483
  • Stark County Historical Society, 318 W. Jefferson Street, P.O. Box 524, Toulon, IL 61483
  • Stephenson County Genealogical Society, P.O. Box 514, Freeport, IL 61032
  • Stephenson County Historical Society, 1440 S. Carroll Avenue, Freeport, IL 61032
  • Sterling-Rock Falls Historical Society Museum, 1005 E. 3rd Street, P.O. Box 65, Sterling, IL 61081
  • Stone Park Historical Association, 1629 Mannheim Road, Stone Park, IL 60165-1118
  • Streatorland Historical Society, 306 S. Vermillion Street, Streator, IL 61364
  • Sugar Grove Historical Society, 214 Main Street, P.O. Box 102 , Sugar Grove, IL 60554-0102
  • Tampico Area Historical Society, 119 S. Main, P.O. Box 248, Tampico, IL 61283-0248
  • Tazewell County Genealogical Society, 719 N. 11th St., P.O. Box 312, Pekin, IL 61555-0312
  • Thebes Historical Society, P.O. Box 14, Thebes, IL 62990-0014
  • Thornton Township Historical Society, 154 E. 154th Street, Harvey, IL 60426
  • Tilton Historical Society, 201 W. 5th Street, Tilton, IL 61833-7427
  • Tinley Moraine Genealogists, 17101 S. 71st Street, P.O. Box 521, Tinley Park, IL 60477-0521
  • Tinley Park Historical Society, 6727 W. 174th Street, P.O. Box 325, Tinley Park, IL 60477
  • Tremont Museum & Historical Society, Madison & Sampson, P.O. Box 738, Tremont, IL 61568-0738
  • The Tri-State Genealogical Society - Southwest Indiana, Southeast Illinois, and Western Kentucky
  • Tri-County Heritage House, 306 Lime Street, Albany, IL 61230
  • Union County Genealogical & Historical Society, 101 East Spring Street, Anna, IL 62906
  • Vandalia Historical Society, 307 N. 6th, Vandalia, IL 62471-2236
  • Versailles Area Genealogical & Historical Society, P.O. Box 9, Versailles, IL 62378
  • Villa Park Historical Society, 220 S. Villa Avenue, Villa Park, IL 60181-2656
  • Village of Thornton Historical Society, 208 Schwab Street, P.O. Box 34, Thornton, IL 60476-0034
  • Wabash County Historical Society, 119 W. 3rd, P.O. Box 911, Mt. Carmel, IL 62863-0512
  • Waverly Gen. & Historical Society, 157 E. Tremont St., Waverly, IL  62692
  • Warren County Genealogical Society, P.O. Box 761, Monmouth, IL 61462-0761
  • Warren County Historical Society, P.O. Box 325, Roseville, IL 61473
  • Warren County Historical Society, RR #2, Avon, IL 61415
  • Warren Township Historical Society, 4690 Old Grand Avenue, Gurnee, IL 60031
  • Warrenville Historical Society, 3 S. 530 2nd Street, P.O. Box 311, Warrenville, IL 60555-0311
  • Warsaw Historical Society & Museum, 401 Main Street, Warsaw, IL 62379-1246
  • Wauconda Historical Society, 711 N. Main Street, P.O. Box 256, Wauconda, IL 60084-0256
  • Waukegan Historical Society/Haines Museum, 1917 N. Sheridan Road, P.O. Box 857, Waukegan, IL 60079-0857
  • Waverly Genealogical & Historical Society & Museum, 157 East Tremont, Waverly, IL 62692
  • Wayne County Historical Society Museum, 300 S. 2nd Street, Fairfield, IL 62837
  • West Chicago Historical Society, 132 Main Street, P.O. Box 488, West Chicago, IL 60185-2835
  • Westchester Historical Society, 10332 Bond Street, Westchester, IL 60154-4361
  • Western Springs Historical Society, 916 Hillgrove Avenue, P.O. Box 139, Western Springs, IL 60558-139
  • Westmont Area Historical Society, 75 E. Richmond Street, Wesmont, IL 60559-1894
  • Wheaton History Center, 606 N. Main Street, P.O. Box 373, Wheaton, IL 60189
  • Wheeling Historical Society & Museum, 251 N. Wolf Road, P.O. Box 3, Wheeling, IL 60090-0003
  • White County Historical Society, P.O. Box 121, Carmi, IL 62821
  • Whiteside County Genealogists, P.O. Box 145, Sterling, IL 61081
  • Will/Grundy Genealogical Society, P.O. Box 24, Wilmington, IL 60481
  • Williamson County, IL Historical Society, 105 S. Van Buren., St., Marion, IL. 62959
  • Wilmette Historical Society, 555 Hunter Road, Wilmette, IL 60091-2209
  • Wilmington Area Historical Society, 104 N. Water Street, P.O. Box 1, Wilmington, IL 60481-0001
  • Winfield Historical Society, 555 Winfield Road, P.O. Box 315, Winfield, IL 60190
  • Winnebago/Boone Counties Genealogical Society, P.O. Box 10166, Rockford, IL 61131-0166
  • Winnetka Historical Society, 1140 Elm Street, Winnetka, IL 60093-2563
  • Wood Dale Historical Society, 850 N. Wood Dale Road, P.O. Box 13, Wood Dale, IL 60191-0013
  • Woodford County Historical Society, 615 W. Maple, Eureka, IL 61530-1340
  • Woodridge Area Historical Society, 2628 Mitchell Drive, Woodridge, IL 60517-2929
  • Worth Park Historical Museum, 115th & Beloit, Worth, IL 60482
  • Wyanet Historical Society, 109 E. Main, P.O. Box 169, Wyanet, IL 61379-0169
  • Zion Genealogical Society, 2400 Gabriel Avenue, Zion, IL 60099-2296