Statistics for occurrence #1 of “Illinois” in chapter 5 of George Bancroft, History of the United States from the Discovery of the American Continent, Vol. 3, 15th edition.:

...hildren, also, were detained as captives. When the work of death was finished, pillage and carousals began. The news spread dismay in New Orleans. Messengers were sent with the tidings to the Illinois , by way of the Red River, and to the Choctas and Cherokees. Each house was supplied with arms; the city fortified by a ditch. Danger appeared on every side. The negroes, of whom the number was ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Illinois (Illinois, United States) 6,200 72 0 0 0 user votes
Illinois (New Mexico, United States) 4 0 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.