Statistics for occurrence #1 of “Potomac” in chapter 6, page 94 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.:

... that able organizer a more secure feeling immediately appeared. He directed the immediate completion of the fortifications of the city, and also bent his energy to organizing the great Army of the Potomac . Once the positions on the right bank of the Potomac were reasonably secure through the works just mentioned and such additional defenses as Fort Albany, Fort Scott, and various lines of connecti...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Potomac (Illinois, United States) 2 0 0 0 0 user votes
Potomac (Maryland, United States) 1 0 1 0 0 user votes
Potomac (Montana, United States) 0 0 0 0 0 user votes
Potomac (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.