Snyder, John W. (John Wesley), 1895-1985. Letter to Mr. Martin, Box 11, Folder 4, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/scribd/?item_id=457271&filepath=/files/docs/historical/martin/11_04_19470623.pdf&start_page=1, accessed on October 20, 2017.
Response to changing rates of interest.
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources