American Thermos Bottle Company
1915
Founded in 1907, the American Thermos Bottle Company became the leading manufacturer of vacuum-insulated flasks. This letterhead was used in 1915, two years after the company opened its primary manufacturing plant in Norwich, Connecticut. In the top-left corner, the devil and an Inuit each hold a Thermos; beneath them, the company slogan: "It is never too hot or too cold for the man with a Thermos bottle."
Source: AbeBooks