Martin, William McChesney. Letter to Hart, Box 1, Folder 2, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/scribd/?item_id=457260&filepath=/files/docs/historical/martin/01_02_19360403.pdf&start_page=1, accessed on September 25, 2017.
Comments on current business and political conditions including the re-election of Franklin D. Roosevelt.
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources