Vintage photos of:
June 1942. "John Sonesen, propeller grinder at a Hartford, Connecticut, plant, inspects a blade for a vertical balance during the operation of grinding it to correct contours in a template. This Hamilton blade will be assembled in a pitch-controlling Hydra-Matic mechanism to help power one of our new warplanes." Photo by Andreas Feininger for the Office of War Information. View full size.
Detroit circa 1911. "Boulevard view, Packard auto plant." At least two laborers are hard at work in our second look at the expansion of Albert Kahn's factory from two stories to four, at the spot where a bridge was eventually built over Grand Boulevard, connecting this building with one across the street. View full size.