Gramm-Bernstein Company

The company was an early manufacturer of power wagons and advertised 1, 2, 3, and 5 ton models with "any style of body desired".

All of the smaller Ahrens-Fox apparatus of 1939-1940 were on Schacht chassis; Gramm/Ahrens-Fox models were no longer available starting in mid 1939.

From 1937 to 1939, the Bickle Fire Engine Company of Woodstock, Ontario, built fire engines using very similar sheet metal designs to those that Ahrens-Fox was using at that time, and as with Ahrens-Fox, these radiators, hoods, and fenders were also supplied to Bickle by Gramm Trucks of Lima, Ohio.

Bickle had been Ahrens-Fox's Canadian sales and service agency from 1923 to 1936; starting in 1936, Bickle was the Canadian sales and service agency for Seagrave Corporation fire engines of Columbus, Ohio.

Walt McCall of Windsor, Ontario, Ed Hass of Sacramento, California, and the late Bob Johnson of Peoria, Illinois (the latter was an Ahrens-Fox fire engine salesman from 1923 to 1939) provided the research about the Ahrens-Fox and Bickle connections with Gramm Trucks.