1918 NATIONAL Swift, Safe and Sure NATIONAL MOTOR CAR & VEHICLE CORPORATION Indianapolis, IND The Literary Digest June 15, 1918 8.5″x12″ page 70
1918 NATIONAL The Gasoline Passenger Cars of 1918 THE HORSELESS AGE November 15, 1917 9″x12″ page 25
1918 NATIONALNational Highway Twelve Roadster Highway Six Touring Floyd Clymer’s Historical Catalog of 1918 CARS 5.25″x8.25″ pages 78 & 79