Board of Governors of the Federal Reserve System (U.S.), 1935-. "Capacity Utilization : Manufacturing, Mining, and Utilities and Industrial Materials, January 1967-December 1986,"
G.3 Capacity Utilization, Manufacturing, Mining, Utilities and Industrial Materials
(1987-10-01).
https://fraser.stlouisfed.org/title/51/item/56849, accessed on March 20, 2025.
@FedFRASER