Public domain
High school Victory Corps. Rudolph Angar, instructor, explains propeller characteristics to students in the aeronautics class at Washington High School, Los Angeles, California. Girls as well as boys are needed in airplane mechanics
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineHigh school Victory Corps. Rudolph Angar, instructor, explains propeller characteristics to students in the aeronautics class at Washington High School, Los Angeles, California. Girls as well as boys . 1942-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.