Martin, William McChesney. Personal Letter to Malcolm W. Martin (Brother), Box 9, Folder 6, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/scribd/?item_id=457036&filepath=/files/docs/historical/martin/09_06_19441208.pdf&start_page=1, accessed on October 21, 2017.
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources