Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 20, 1968," G.27 Commercial and Industrial Loans to U.S. Addresses, Excluding Bankers' Acceptances and Commercial Paper, by Industry (March 20, 1968). https://fraser.stlouisfed.org/content/?item_id=482112&filepath=/files/docs/releases/g27/h12_19680320.pdf, accessed on July 16, 2018.
Board of Governors of the Federal Reserve System