1941 Keep ’em Flying. U.S. Army Recruiting Service

Keep ’em flying., poster, Date Unknown; (digital.library.unt.edu/ark:/67531/metadc513/m1/1/?q=Keep%20%27em%20Flying: accessed March 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.