"Leiper, George Gray" (L000234), in Biographical Directory of the United States Congress. Washington, D.C.: Offices of the Historians of the U.S. House of Representatives and U.S. Senate, retrieved online February 25, 2023.
politicalgraveyard.com
"Leiper, George Gray." Ann Arbor, Michigan: The Political Graveyard, May 10, 1922.