- Documents on the Constitutional History (1964). "Documents on the Constitutional History of Puerto Rico" (Office of the Commonwealth of Puerto Rico, 1964)
- Congressional Record (1873-2024). "Congressional Record: Containing the Proceedings and Debates of the 43d Congress March 4, 1873-to date" (Washington: Government Printing Office, 1874-2024) (web site, web site, web site)
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