Statistics for occurrence #1 of “the Alleghanies” in entry united-states-of-america-pennsylvania of Harper's Encyclopedia of United States History:

...ed States, published......1785 General convention of the Protestant Episcopal Church, the first in America, meets at Philadelphia......Sept. 27, 1785 Pittsburg , first paper published west of the Alleghanies , issued......July 29, 1786 Boundary-line between Pennsylvania and Virginia, continuation of Mason and Dixon's line, extended to a point five degrees west from the Delaware......1786 Conventio...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† 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.