United States. Congress. Senate. Control of Call Loan Rates (Pocket), Box 2158, Folder 3, Records of the Federal Reserve System, Record Group 82. https://fraser.stlouisfed.org/scribd/?item_id=469264&filepath=/files/docs/historical/nara/nara_rg082_e02_b2158_03.pdf, accessed on December 17, 2017.
Pamphlet on the Stock Clearing Corporation of the New York Stock Exchange and a US Senate publication "Rates of Interest on Collateral Call Loans."
- other: 460.11