|Collection of the U.S. House of Representatives
Ralph Nader Congress Project.
Citizens Look at Congress: John M. Slack, Jr., Democratic Representative from West Virginia. Washington, D. C.: Grossman Publishers, 1972.
United States. Congress (96th, 2nd session: 1980).
Memorial services held in the House of Representatives and Senate of the United States, together with remarks presented in eulogy of John M. Slack, late a Representative from West Virginia / Ninety-sixth Congress, second session. Washington: Government Printing Office, 1980.