Data Are For Acreage Harvested. Source: U.S. Department Of Agriculture, "Agricultural Statistics", 1941, 1942, And 1950; Crop Reporting Board, "Crop Production", 1951 Annual Summary, December 1951 And Subsequent Mimeographed Releases.
This NBER data series a01037c appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: a01037c
Release: NBER Macrohistory Database
National Bureau of Economic Research, Corn Crop Acreage for United States [A0137CUSA383NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A0137CUSA383NNBR/, July 3, 2015.