Public domain
Salinas, California. Intercontinental Rubber Producers. A sack of seed from selected guayule plants. This selected seed will be used for experimental work in seed propagation to raise shrubs for maximum production
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineSalinas, California. Intercontinental Rubber Producers. A sack of seed from selected guayule plants. This selected seed will be used for experimental work in seed propagation to raise shrubs for maxim. 1941-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.