Wilhelm, Donald.What Makes the Wheels Go Round? Aluminum Co. of America, 1930. 10pp, illus, 6.5x9.5". A reprint of a World's Work magazine article for advertising purposes; article's focus is on the use of aluminum in aircraft pistons. About fair condition, front cover rubber stamps for NACC and a patent file. Title page has a stamp for the Grand Central Palace Auto Show, Jan 4-11, 1930. Three-hole "half-punched".