Many of the State Historical Society of Missouri’s holdings are included in Merlin, the shared library catalog of the four University of Missouri campuses. Numerous titles can be found by typing the keywords “politics,” “politician,” and “Missouri” into the search bar. Other search terms include “governor,” “representative,” “senator,” or any Missouri politician’s name. The State Historical Society of Missouri has a large collection of government documents and privately published works.
The State Historical Society’s Historic Missourians website has an entire category devoted to politicians in Missouri.