Martin, William McChesney. Letter to Mr. President Harry S. Truman, Box 13, Folder 7, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/scribd/?item_id=456886&filepath=/files/docs/historical/martin/13_07_19461220.pdf&start_page=1, accessed on September 26, 2017.
Regarding meeting with Clayton
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources