Dying in the City of the Blues: Sickle Cell Anemia and the Politics of Race and Health. University of North Carolina Press. p. 165. ISBN 978-0-8078-4896-8.
"Health insurance: hearings on new proposals". Congressional Quarterly Almanac. 92nd Congress 1st Session ... 1971. Congressional Quarterly Almanac Plus. Vol. 27. Washington, D.C.: Congressional Quarterly. 1972. pp. 541–544. ISSN 0095-6007. OCLC 1564784.
"Limited experimental health bill enacted". Congressional Quarterly Almanac. 93rd Congress 1st Session ... 1973. Congressional Quarterly Almanac Plus. Vol. 29. Washington, D.C.: Congressional Quarterly. 1974. pp. 499–508. ISSN 0095-6007. OCLC 1564784.
"National health insurance: no action in 1974". Congressional Quarterly Almanac. 93rd Congress 2nd Session ... 1974. Congressional Quarterly Almanac Plus. Vol. 30. Washington, D.C.: Congressional Quarterly. 1975. pp. 386–394. ISSN 0095-6007. OCLC 1564784.
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Grier, Peter (2011). "Tax Day 2011: Why do presidents release tax returns?". Christian Science Monitor. Retrieved December 20, 2013.

Further reading
Farrell, John A. (2017) Richard Nixon: The Life New York: Doubleday
Li, Victor (2018). Nixon in New York: How Wall Street Helped Richard Nixon Win the White House. Madison, NJ: Fairleigh Dickinson University Press. ISBN 978-1-68393-000-6.
Thomas, Evan (2015). Being Nixon: A Man Divided. 