Drawing, "Ignition Coil Primary Winding Assembly" Lincoln Automobile, May 28, 1948

The Ford Motor Company created over a million parts drawings from 1903 to 1957. Many of these drawings specify engineering requirements for the components of Ford-made vehicles--including automobiles, trucks, tractors, military vehicles and Tri-motor airplanes. Others document assembly components, stages of casting and forging, or experimental designs. Beginning in the 1940s, Ford transferred the drawings to microfilm.