http://digicoll.library.wisc.edu/WI/subcollections/WIBlueBksAbout.shtml

The State of Wisconsin publishes an annual volume known as the Wisconsin Blue Book, which contains extensive data on the state’s government, population, geography, history, elections, education, social services, finance, agriculture, industry, and transportation. This project offers digitized versions of the Blue Books from 1853 through 2004.

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