Official Records
The records of the U.S. Court of Appeals for the Seventh Circuit are included among Record Group 276 and are split between the:
National Archives at Chicago
7358 South Pulaski Road
Chicago, Illinois 60629-5898
Email: chicago.archives@nara.gov
and the:
National Archives at Kansas City
400 West Pershing Road
Kansas City, Missouri 64108
Email: kansascity.archives@nara.gov
Guides to the holdings of the regional archives are available at: https://www.archives.gov/chicago/holdings
and https://www.archives.gov/kansas-city/holdings
A published description of the records is also available in the Guide to Federal Records in the National Archives of the United States, 1995 (http://www.archives.gov/research/guide-fed-records/index.html ).
Bibliography
Solomon, Rayman L. History of the Seventh Circuit, 1891-1941. Washington, D.C.: Bicentennial Committee of the Judicial Conference of the United States, 1981.