Series Is Presented Here As Two Variables--(1)-- Original Data, 1910-1938 (2)--Original Data, 1927-1956. Monthly Prices (As Of The 15Th Of The Month) By States Are Weighted By Sales To Obtain U.S. Average Prices. According To The 1942 Agricultural Statistics, "Average Prices Based On Deliveries To Oil Mills." Source: For 1927-1929, Agricultural Statistics, 1938; For 1930-June, 1931, Agricultural Statistics, 1940; For July, 1931-December, 1940, Agricultural Statistics, 1942; For January, 1941 On, Crops And Markets, January, 1944; Annual Issues 1954; 1955 Is In United States Department Of Agriculture, Agricultural Prices.
This NBER data series m04006ab appears on the NBER website in Chapter 4 at http://www.nber.org/databases/macrohistory/contents/chapter04.html.
NBER Indicator: m04006ab
Release: NBER Macrohistory Database
National Bureau of Economic Research, Farm Prices of Cottonseed for United States [M046ABUSM294NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M046ABUSM294NNBR/, August 30, 2015.