Szymczak, M. S. Letter to Honorable William McC. Martin, Jr., Box 16, Folder 2, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/content/?item_id=456845&filepath=/files/docs/historical/martin/16_02_19490414.pdf, accessed on May 20, 2018.
With copies of letters: Taylor to Mendels, and Frere to Mendels. International Bank
- Board of Governors of the Federal Reserve System (U.S.), 1935-
- United States. Department of the Treasury
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources