1. U.S. Bureau of the Census Fats and Oils, Production, Consumption, and Factory and Warehouse Stocks Washington, D.C. 1970
2. Anonymous Oil, Paint Drug Report 1970 26 41
3. U.S. Department of Agriculture, Economic Research Service Fats and Oils Situation 1969 Washington, D.C. 11
4. Anonymous Oil, Paint Drug Report 1969 5