Snyder, John W. (John Wesley), 1895-1985. Letter to Mr. Martin, Box 11, Folder 4, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/archival/1341/item/457271, accessed on August 15, 2018.
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