Series Is Presented Here As Two Variables--(1)-- Original Data, 1842-1944 (2)--Original Data, 1938-1952. Data Are For Weighted Average Price Of All Grades (Weighted On Basis Of Number Of Carlots Sold) At Chicago, Minneapolis, Kansas City, St. Louis, Omaha, And Duluth. Source: Agricultural Statistics, 1942, For 1938-1941 Data; Crops And Markets, For The Years 1941-1950; The Wheat Situation, For The Years 1951-1952.
This NBER data series m04001b appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04001b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Wholesale Price of Wheat, Chicago; Six Markets for Chicago, IL [M04F1BUS16980M260NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M04F1BUS16980M260NNBR, February 12, 2016.