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

... 3,826,351; 1900, 4,821,550. Capital, Springfield. Louis Joliet and Jacques Marquette descend the Mississippi River from the mouth of the Wisconsin to the Arkansas. Returning, they ascend the Illinois , making their way to Lake Michigan via the Desplaines and Chicago rivers......1673 Marquette, purposing to establish a mission among the Illinois Indians, makes a portage from the Chicago to the...
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.