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

...lately had in support of history. Beyond the Alleghanies 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 ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Iowa (Iowa, United States) 1,742 2 0 0 0 user votes
Iowa (Iowa, United States) 0 0 0 0 0 user votes
Iowa (Louisiana, United States) 0 0 0 0 0 user votes
Iowa (Pennsylvania, 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.