Folder with printed cover label containing a 16-page booklet & 8 loose screened halftone plates from photographs of automobiles. 22x18 cm. (8¾x7").

Promotional material for the air spring that George Westinghouse invented in 1910. The photographs are of automobiles equipped with the springs, and are unidentified, for "all of the motor cars [are] of established reputation have individual features which make them instantly recognizable by those who have any interest in the subject." OCLC/WorldCat lists no copies of this item in libraries.