Board of Governors of the Federal Reserve System (U.S.), 1935-. "Explanatory Note," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "May 15, 1985," G.12.3 Industrial Production (1985-05-15) : 19-19. https://fraser.stlouisfed.org/title/55/item/59692/toc/473051 , accessed on March 28, 2024.