https://digital.sciencehistory.org/works/6ncgpvw
Hercules Powder Company exhibition display (circa 1950) - Science History Institute Digital...
General view of an exhibition display advertising the Hercules Powder Company. Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules...
hercules powder companyscience history instituteexhibitiondisplaycirca