Records of the Federal Reserve System
Box 2158, Folder 3: Control of Call Loan Rates
Pamphlet on the Stock Clearing Corporation of the New York Stock Exchange and a US Senate publication "Rates of Interest on Collateral Call Loans."
United States. Congress. Senate
National Archives at College Park, MD
United States. Congress. Senate, , Box 2158, Folder 3: Control of Call Loan Rates, from Records of the Federal Reserve System, accessed Jul 26, 2014 from FRASER, http://fraser.stlouisfed.org/rg82/record.php?id=17608