Statistics for occurrence #1 of “Chambersburg” in year 1861, month June, day 7 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

...sitions at the Navy Yard for half a century, has been put in commission for blockade service. The Advance Brigade of Federal troops, under Col. Thomas, reached Greencastle, thirteen miles south of Chambersburg , Pa.--N. Y. World, and N. Y. Times, June 8.
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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Chambersburg (New Jersey, United States) 716 24 128 4 0 user votes
Chambersburg (Illinois, United States) 0 0 0 0 0 user votes
Chambersburg (Missouri, United States) 0 0 0 0 0 user votes
Chambersburg (Ohio, 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.