Statistics for occurrence #1 of “Pennsylvania” in year 1863, month July, day 6 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...fects of a severe wound which he received in the battle at Corinth, in October last.--the Richmond Sentinel published an elaborate article, setting forth the plan of General Lee for his movement into Pennsylvania . The most important part of it was to quit the defensive and assume the offensive toward the enemy.
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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Pennsylvania (Pennsylvania, United States) 12,690 194 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.