Release: NBER Macrohistory Database
Source: U.S. Department Of Agriculture, "Agricultural Statistics", 1937, Pp. 9-10; "Crops And Markets", September 1939; "Agricultural Statistics", 1950; Crop Reporting Board, "Crop Production", 1951 Annual Summary.
This NBER data series a01009a appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: a01009a
National Bureau of Economic Research, Wheat Crop for United States [A0109AUSA391NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/A0109AUSA391NNBR, July 25, 2017.