Guayule Seed Sack for Experimental Propagation 1941

A sack of seed from selected guayule plants appears in this vintage image from December 1941. Guayule, a plant native to Mexico and the southwestern United States, was studied for its potential as a rubber source during World War II. The Intercontinental Rubber Producers in Salinas, California, engaged in experimental seed propagation to enhance production efficiency.

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