Part of a incredible collection of "Dr Delco"

Note the salesman's unit (dr-10) The salesman would park his truck or car with trailer outside with the Delco running. He would walk into the customers kitchen with the little demo unit and set in in the center of the kitchen table. Very effectively making his point of how bright the light was.

Later in his demo he would produce a electric coffee pot and plug it into the demo unit and make coffee for his customers.