Rendering of a convertible car, designed by John Tjaarda and Associates. Typed on back: "No.: MS6/33 - folder 7. Subject: Automobiles--Design and construction (John Tjaarda and Associates, John Tjaarda). Collection: MS6/ John Tjaarda Collection. Date: 1942. Location: [blank]. Photographer: [blank]. Source: [blank]. I.D.: [blank]."