These are from book lists and books I own.

Civil War a Time-Life Books Series, 28 Volumes
The Life of Billy Yank, the Common Soldier of the Union by Bell I. Wiley
The Life of Johnny Reb, The Common Soldier of the Confederacy by Bell I. Wiley
The Blue and the Gray, 2 vols., by Henry Steele Commager
The Civil War Trivia Quiz Book by William Terdoslavich
Civil War Triva and Fact Book by Webb Garrison
Civil War Quiz and Fact Book by Rod Gragg
The Civil War, Day by Day: An Almanac 1861-1865 by E.B. Long
Don’t Know Much About the Civil War: Everything You Need to Know About America’s Greatest Conflict but Never Learned by Kenneth C. Davis
A Civil War Treasury of Tales, Legends and Folklore by B.A. Botkin
Picture History of the Civil War by Bruce Catton
Who Was Who in the Civil War by John S. Bowman
*The Killer Angels by Michael Shaara
*Through Blood and Fire at Gettysburg by General Joshua Lawrence Chamberlain
A Colonel, A Flag, and a Dog by Cindy Stouffer and Shirley Cubbison
*Three Months in the Southern States by Lt. Col. Arthur J.L. Fremantle
On the Bloodstained Field II by Gregory A. Coco
The Gettysburg Battlefield Tour Book by Dr. Michael R. McGough
The Faces of Gettysburg edited by JoAnna M. McDonald
Gettysburg Then and Now by William A. Frassanito
*Days of Darkness, the Gettysburg Civilians by William G. Williams
Gettysburg, the Souveniers Guide to the National Military Park by James A. Gross and Andre B. Collins
Haunted Gettysburg Series by Jack Bochar and Bob Wasel
Ghosts of Gettysburg Series by Mark Nesbitt
Gettysburg Civil War Times Illustrated
The Gettysburg Campaign by Edwin B. Coddingtton
Gettysburg: A Journey in Time by William A. Frassanito
They Met At Gettysburg by Edward J. Stackpole
The Battle of Gettysburg by William C. Storrick
Gettysburg by Frederick Tilberg
High Tide at Gettysburg by Glenn Tucker
The Battle of Gettysburg by Jesse Bowman Young


*-indicates books that due to content are probably better for kids ages 11 and up. These are only from books I have read, others may contain the same content.