Statistics for occurrence #1 of “Illinois” in chapter 1, page 173 of Cambridge History of American Literature: volume 3:

...we find trace of the same awakening. State historical societies were established in Ohio in 1831, in Wisconsin and Minnesota in 1849, in Iowa in 1857, in Kansas in 1875, in Nebraska in 1878, and in Illinois and Missouri in 1899. Besides these state societies were several important privately projected societies: as the Chicago Historical Society, founded in 1855, and the Missouri Historical Society est...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Illinois (Illinois, United States) 6,200 28 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.