| Author | Title | Publication | Date | Pages | Comments |
| anon | Paraguay | Gibbons Stamp | Sep 1929 | 238 | Red Cross labels |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Mar 1931 | 117 | Correction, variety |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Jan 1936 | 77-78 | Counterfeit airmails |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Nov 1936 | V | Variety |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Oct 1939 | 19 | Quantities issued |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Dec 1929 | 59 | Quotes from decree |
| Monthly | & quantities issued |
| anon | Paraguay | Gibbons Stamp | Apr 1932 | 148 | Quantities issued |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Jan 1936 | 77-78 | Forgeries of 1931 |
| Monthly | air stamps |
| anon | Paraguay | Gibbons Stamp | Oct 1933 | 19 | Quantities issued |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Jan 1930 | 79 | Quotes from a |
| Monthly | decree & quantities |
| anon | Paraguay | Gibbons Stamp | Dec 1939 | 52 | Quantities issued |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Mar 1930 | 119 | Notes varieties |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Nov 1933 | 39 | Quantities issued |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Nov 1930 | V | Variety & quantity |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Mar 1930 | 119 | Varieties |
| Monthly |
| anon | Paraguay | Gibbons Stamp | Mar 5, 1910 | 233 | Notes on surcharges |
| Weekly |
| anon | Paraguay | Gibbons Stamp | Aug 27, 1910 | 210 | Items on sale |
| Weekly |
| anon | Paraguay | Gibbons' Stamp | Feb 1939 | 99 | Tell which stamps |
| Monthly | have not been |
| anon | Paraguay | Gibbons' Stamp | Dec 1929 | 59 | Rural issue |
| Monthly | quantities |
| anon | Paraguay | Gibbons' Stamp | Sep 1937 | 237 | Establishment of air |
| Monthly | mail service with |
| anon | Paraguay | Gobbons Stamp | Jun 1929 | 179 | Size of sheet & |
| Monthly | watermark |
| anon | Paraguay | Griebert's Philatelic | Jan 1909 | 25 | Varieties |
| Notes and Offers |
| anon | Paraguay | Griebert's Philatelic | Jan 1909 | 19 | Dates of issue for |
| Notes and Offiers | various provisionals |
| anon | Paraguay | H.R. Harmer (NY) | Oct 26-28, 1942 | Lots #999-1005 | Early items |
| anon | Paraguay | HJMR Pricelist | 1971 | 347 | List of some |
| literature |
| anon | Paraguay | Illustriertes | Jun 14, 1930 | 191 | Quantities issued |
| Breifmarken Journal |
| anon | Paraguay | Illustriertes | Jan 16, 1937 | 32 | Date of Issue |
| Briefmaken Journal |
| anon | Paraguay | Illustriertes | Jul 4, 1936 | 204-205 | Dates of issue |
| Briefmaken Journal |
| anon | Paraguay | Illustriertes | Dec 5, 1936 | 275 | Date of issue |
| Briefmaken Journal |
| anon | Paraguay | Illustriertes | Nov 4, 1905 | 447 | Claims certain |
| Briefmarken Journal | provisionals are |
| Saturday, February 19, 2000 | Page 6 of 42 |