Beginning In July 1949, About 1000 Producers And Consumers Of Small Quantities Of Fats And Oils Have Not Filed Monthly But Only Annual Reports. By 1954, The Number Of Such Firms Had Grown To About 1500. Monthly Figures For Such Plants Are Estimated On The Basis Of The Performance In The Preceeding Year, And Significant Discrepencies Between Estimated And Reported Annual Totals Are Adjusted In The Annual Issues Of "Animal And Vegetable Fats And Oils" (Source, Introduction). Beginning With January 1955, Figures For Inedible Tallow Were Combined With Figures For Grease, Other Than Wool (See"Fats And Oils, Series M17-1-15, For January 1955). Source: U.S. Bureau Of The Census, Facts For Industry, "Animal And Vegetable Fats And Oils."
This NBER data series m01218 appears on the NBER website in Chapter 1 at http://www.nber.org/databases/macrohistory/contents/chapter01.html.
NBER Indicator: m01218
Release: NBER Macrohistory Database
National Bureau of Economic Research, Inedible Tallow Production for United States [M01218USM149NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M01218USM149NNBR/, October 8, 2015.