Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Public domain photograph of a machine part, motor, equipment, free to use, no copyright restrictions image - Picryl description
Public domain scan of manuscript related to American history, NYPL collection, free to use, no copyright restrictions image - Picryl description.
Picryl description: Public domain photo of vintage New York postcard, free to use, no copyright restrictions image.
Public domain scan of American 19th-century print, free to use, no copyright restrictions image - Picryl description
Public domain photograph of vintage postcard, free to use, no copyright restrictions image - Picryl description