Regulations of the legislatures of certain states prescribing congressional districts in accordance with the Apportionment Act of Congress based upon the census of 1940 (United States Congress)

This pamphlet was printed to document the changes in apportionment of congressional Representatives after the 1940 census. While California gained three Representatives between 1930 and 1940, Illinois (shown here) lost one.

Illinois
Compiled by H. Newlin Megill under the direction of South Trimble, clerk of the House of Representatives.
Washington, D.C.: U.S. Government Printing Office, 1944
Gould Library Government Documents