Statistics for occurrence #1 of “Gettysburg” in chapter 10 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 8: Soldier Life and Secret Service.:

...r older than little Clem, when he rode with his father through the Jackson campaign and the siege of Vicksburg. There were other sons who rode with commanding generals, as did young George Meade at Gettysburg , as did the sons of Generals Humphreys, Abercrombie, and Heintzelman, as did Win and Sam Sumner, both generals in their own right to-day, as did Francis Vinton Greene, who had to be locked up to keep...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Gettysburg (Pennsylvania, United States) 7,452 85 1,368 1 0 user votes
Gettysburg (South Carolina, United States) 0 0 0 0 0 user votes
Gettysburg (South Dakota, United States) 0 0 0 0 0 user votes

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