Statistics for occurrence #1 of “Potomac river” in chapter 34 of The Annals of the Civil War Written by Leading Participants North and South:

... the Potomac; but the Army of the Potomac did not leave Gettysburg for four or five days after, and then passed by the way of South Mountain to the Antietam creek. In consequence of heavy rains the Potomac river was so much swollen that Lee could not cross, and the two armies were again brought face to face for two days. General Meade declined to attack, and Lee's army escaped. The cavalry rendered importa...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Potomac River (United States) 286 2 0 0 0 user votes
Potomac River (Maryland, United States) 2 0 0 0 0 user votes
Potomac River (Maryland, United States) 2 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.