Statistics for occurrence #1 of “Gettysburg” in chapter 13, page 260 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...
Gettysburg was an illustration of the corps' resourcefulness; for in this instance pontoon boats were lacking. The expedition with which material was collected, boats built, and the bridge constructed was mos...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Gettysburg (Pennsylvania, United States) 7,452 52 1,368 0 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

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.