View of a cylinder head for a Ford car, designed by John Tjaarda and Associates. Printed on front: "Standard Ford head, 18000 miles, 6:3:1." Typed on back: "No.: MS6/114 - folder 23. Subject: Engines--Automotive (Ford). Collection: MS6/ John Tjaarda Collection. Date: c.1935. Location: [blank]. Photographer: [blank]. Source: [blank]. I.D.: Cylinder head test: standard Ford head, 18,000 miles, compression ratio, 6:3:1."
