Statistics for occurrence #1 of “Williamsport” in chapter 13 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.:

...ed, they were handled by the Pioneer Corps, or other details from the ranks, under the direction of officers of the Engineer Corps. The bridge on which General Lee's army recrossed the Potomac near Williamsport after the battle of The Confederates had swung upwards the muzzle of this 8-inch smooth-bore sea-coast gun within Fort Pulaski, so that it could be used as a mortar for high-angle fire again...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Williamsport (Maryland, United States) 1,172 2 118 0 0 user votes
Williamsport (Louisiana, United States) 71 0 5 0 0 user votes
Williamsport (Pennsylvania, United States) 63 0 5 0 0 user votes
Williamsport (West Virginia, United States) 57 0 3 0 0 user votes
Williamsport (Ohio, United States) 13 0 3 0 0 user votes
Williamsport (Tennessee, United States) 11 0 5 0 0 user votes
Williamsport (Indiana, United States) 6 0 2 0 0 user votes
Williamsport (Pennsylvania, United States) 1 0 1 0 0 user votes
Williamsport (Canada) 0 0 0 0 0 user votes
Williamsport (Indiana, United States) 0 0 0 0 0 user votes
Williamsport (Kansas, United States) 0 0 0 0 0 user votes
Williamsport (Kentucky, United States) 0 0 0 0 0 user votes
Williamsport (Ohio, United States) 0 0 0 0 0 user votes
Williamsport (Ohio, United States) 0 0 0 0 0 user votes
Williamsport (Ohio, United States) 0 0 0 0 0 user votes
Williamsport (Ohio, 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.