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Mary Petillo, forelady of a Newark, New Jersey factory making lamp bul...
Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description
Forest Products Laboratory, Madison, Wisconsin. The Forest Products La...
Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description
Vice-President of her local, United Electrical Radio and Machine Worke...
Picryl description: Public domain image of a political campaign, politician, meeting, 1930s, mid-20th-century United States, free to use, no copyright restrictions.
Production. Aircraft. Samples for microscope inspection--a lowly rivet...
Public domain photograph of California in 1930s, free to use, no copyright restrictions image - Picryl description