c. 1918; postmarked 1920; "The Chalmers factory consists of 22 buildings, having 622,481 square feet of manufacturing floor space and occupying a site of 25.75 acres. The Chalmers Company employs on an average 4,000 workment, and builds annually 30,000 cars. The value of the annual product of Chalmers Cars is approximately $33,000,000"; the factory was built in 1907 and was located on Jefferson Avenue East in Detroit.