Board of Governors of the Federal Reserve System (U.S.), 1935-. "January 2, 1978," K.11 Holdover Float as Per Cent of Dollar Amounts Received (January 2, 1978). https://fraser.stlouisfed.org/scribd/?item_id=484589&filepath=/files/docs/releases/k11/k11_19780102.pdf&start_page=1, accessed on October 22, 2017.
Based on the dates of coverage, this is probably the issue for January 2, 1979
Board of Governors of the Federal Reserve System