| 3-25 | Resource Materials, re: Gettysburg |
| 3-26 | Research Projects: Gettysburg Campaign & Battle |
| 3-27 | Research Sources, re: Gettysburg |
| 3-28 | Western Reserve Historical Society Research Collection |
| 3-29 | Bibliographies: Gettysburg Campaign & Civil War |
| 3-30 | Army War College: Historical Rides & Tours |
| 3-31a | Gettysburg Campaign: General History Folder #1 |
| 3-31b | Gettysburg Campaign: General History Folder #2 |
| 3-31c | Gettysburg Campaign: Manuscript by Harry Pfanz |
| 3-32 | Logistics of the Gettysburg Campaign by Major Gilbert S. Harper III |
| 3-33 | The C & O Canal in the Gettysburg Campaign |
| 3-34 | Confederate Campaign Plans |
| 3-35 | Army War College: Lectures & Committee Reports re: Campaign of Gettysburg |
| 3-36 | Lee's Gettysburg Campaign Map; Winchester Public Library |
| 3-37 | Surveys of Gettysburg Battlefield: Info regarding Warren and other maps |
| 3-38 | Bachelder Correspondence |
| 3-39 | J.B. Bachelder Maps |
| 3-40 | E.B. Cope's Battlefield Relief Map |
| 3-41a | Gettysburg Campaign: Routes of Contending Armies Folder #1 |
| 3-41b | Gettysburg Campaign: Routes of Contending Armies Folder #2 |
| 3-42 | Gettysburg Campaign Maps: Army War College Carlisle |
| 3-43a | Gettysburg Campaign Maps: Folder #1 |
| 3-43b | Gettysburg Campaign Maps: Folder #2 |
| 3-43c | Miscellaneous Maps |
| 3-44 | Troop Movement Reports: Campaign & Battle of Gettysburg |
| 3-45 | Troop Movement Maps/Data |
| 3-46a | Gettysburg: Strengths & Casualties Folder #1 |
| 3-46b | Gettysburg: Strengths & Casualties Folder #2 |
| 3-46c | Gettysburg Statistics |
| 4-1 | Pipe Creek Line, Md |
| 4-1a | Battle of Brandy Station |
| 4-2 | Gettysburg Campaign, Pennsylvania Skirmishes |
| 4-2a | Gettysburg Campaign, Pennsylvania Skirmishes |
| 4-2b | Carlisle |
| 4-2c | Chambersburg Area |
| 4-2d | Harrisburg & the Department of the Susquehanna |
| 4-2e | Early's Raid on Gettysburg - June 26, 1863 |
| 4-2f | Battle of Hanover - June 30, 1863 |
| 4-3 | Battle of Gettysburg - General Information |
| 4-4 | Significance of Gettysburg - Dr. Tilberg |
| 4-5 | A Patriotic Landscape: Gettysburg 1863-1913 J.S. Patterson |
| 4-6 | Contemporary Newspaper Accounts, The Brooklyn Eagle |
| 4-6a | Daily Evening Bulletin |
| 4-6b | Adams Sentinel |
| 4-6c | New York Herald |
| 4-6d | Cleveland Plain Dealer |
| 4-6e | Philadelphia Public Ledger |
| 4-6f | Lancaster Evening Express |
| 4-6g | The Lutheran Observer |
| 4-6h | Southern Newspaper Reports on The Gettysburg Campaign |
| 4-7 | Gettysburg Battle: Published Materials |
| 4-8 | Organization of the Army of the Potomac during the Gettysburg Campaign |
| 4-8a | Gettysburg Campaign: Soldier Accounts |
| 4-8b | Union Cavalry in the Gettysburg Campaign |
| 4-8c | Confederate Cavalry in the Gettysburg Campaign |
| 4-8d | Telegraphy and the Signal Corps |