Definition of Federal Supplement
The Federal Supplement publishes opinions of the below listed federal courts:
1932-present U.S. District Courts
1932-1960 U.S. Court of Claims
1949-present U.S. Customs Court (vol. 135). (Renamed Court of International Trade in 1980)
See also Federal Reporter.
That's the definition of Federal Supplement in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.