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

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One of the central United States, lies west of the Mississippi River, which separates it from Illinois , Kentucky, and Tennessee. Arkansas bounds it on the south. On the west, a line drawn south from Kansas City in about long. 94° 30′, separates the State from the Indian Territory and Kan...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Illinois (Illinois, United States) 6,200 682 0 0 0 user votes
Illinois (New Mexico, United States) 4 4 0 0 0 user votes
Illinois (Oregon, United States) 2 0 0 0 0 user votes
Illinois (Colorado, United States) 0 0 0 0 0 user votes
Illinois (Illinois, United States) 0 0 0 0 0 user votes
Illinois (New Mexico, 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.