Statistics for occurrence #1 of “Fitz John Porter” in chapter 5.19 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 1: The Opening Battles.:

... Fitz John Porter
Henry W. Elson McClellan's one hope, one purpose, was to march his army out of the swamps and escape from...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fitz John Porter 1,430 67 84 5 0 user votes
Gen Fitz John Porter 2 0 0 0 0 user votes
Fitz John Portersome 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.