Powell, Oliver S., 1896-1963
, Board of Governors of the Federal Reserve System (U.S.), 1935-
, Federal Reserve Bank of Minneapolis
and Federal Reserve Board, 1914-1935
"Forecasting Farm Tractor Sales in North Dakota."
March 1, 1929,
https://fraser.stlouisfed.org/title/944/item/36653, accessed on August 29, 2024.