Board of Governors of the Federal Reserve System (U.S.), 1935-. "Seasonally Adjusted and Unadjusted Summary," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "March 16, 1970," G.12.3 Industrial Production (1970-03-16) : 1-1. https://fraser.stlouisfed.org/title/55/item/59562/toc/467781 , accessed on May 4, 2024.