GM's Powerama: The forgotten 1955 Chicago spectacle where General Motors spent $82 million to make 35-ton bulldozers dance the mambo, lose to elephants, and showcase a bizarre, futuristic vision of American progress.
Geologist's Hammer for Scale, Rock Outcrop Survey, 1950s
Someone set a rock hammer point-down in loose scree, the way field geologists have always done when they need a photograph that means something later. The dark