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Mary Petillo, Vorarbeiterin einer Fabrik in Newark, New Jersey, die La...
Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description
Forest Products Laboratory, Madison, Wisconsin. Das Forest Products La...
Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description
Als Vizepräsidentin ihres lokalen, United Electrical Radio and Machine...
Picryl description: Public domain image of a political campaign, politician, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.
Produktion. Flugzeuge. Proben zur Mikroskopinspektion - ein niedriger ...
Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description