United States. Department of the Treasury. Charts, Box 15, Folder 5, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/content/?item_id=457220&filepath=/files/docs/historical/martin/15_05_nd2.pdf, accessed on May 22, 2018.
Interest rate patterns and changes in the Government Securities Market
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources