Three renderings of a convertible car, designed by John Tjaarda and Associates. Printed on front: "The design and styling shown in this drawing are the property of John Tjaarda and are not be used in any form without his written consent." Typed on back: "No.: MS6/42 - folder 7. Subject: Automobiles--Design and construction (John Tjaarda and Associates, John Tjaarda). Collection: MS6/ John Tjaarda Collection. Date: c.1950. Location: [blank]. Photographer: [blank]. Source: [blank]. I.D.: [blank]."