Picryl description: Public domain photograph of fabric, textile pattern, free to use, no copyright restrictions.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Public domain photograph of a machine part, motor, equipment, free to use, no copyright restrictions image - Picryl description
Public domain reproduction of illuminated book page, free to use, no copyright restrictions image - Picryl description