Summary of the Belgian proposal, Box 16, Folder 12, William McChesney Martin, Jr., Papers. Missouri History Museum. https://fraser.stlouisfed.org/scribd/?item_id=456869&filepath=/files/docs/historical/martin/16_12_19500331.pdf&start_page=1, accessed on September 23, 2017.
- Board of Governors of the Federal Reserve System, Federal Reserve Board
- Meltzer's History of the Federal Reserve - Primary Sources