Statistics for occurrence #1 of “Pennsylvania” in part 1.2, chapter 1.5, page 60 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 2: Two Years of Grim War.:

... the vast store of war material at this place, made famous a few years before by old John Brown. To conceal his purpose from the inhabitants he inquired along the route about the roads leading into Pennsylvania . It was from his march through Frederick that the Barbara Frietchie story took its rise. But there is every reason to believe that General Jackson never saw the good old lady, that the story is a...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Pennsylvania (Pennsylvania, United States) 12,690 18 2 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.