Public domain
Ingredients used for dying of wool used at WPA (Works Progress Administration/Work Projects Administration) weaving project. Costilla, New Mexico. They are indigo, nitric acid, powdered alum, bark, burdock root, cochineal and walnut husks
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineIngredients used for dying of wool used at WPA (Works Progress Administration/Work Projects Administration) weaving project. Costilla, New Mexico. They are indigo, nitric acid, powdered alum, bark, bu. 1939-01-01. Lee, Russell. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.