Public domain
Washington, D.C. Students at Woodrow Wilson High School take turns working at the board in an algebra class
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineWashington, D.C. Students at Woodrow Wilson High School take turns working at the board in an algebra class. 1943-01-01. Bubley, Esther. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.