The Yearbook of Agriculture: 1954, Marketing. United States Department of Agriculture.

Major soap oils, other than coconut, are tallow and grease and "foots," the residue left after oil refining. Linseed oil (from flaxseed) is the major drying oil. It is used in paints and varnishes, printing ink, synthetic resins, linoleum, oilcloth, and numerous other products. Substantial amounts of soybean oil and such quick-drying oils as tung, dehydrated castor, and oiticica are used similarly.