Public domain photograph of electric industrial equipment, free to use, no copyright restrictions image - Picryl description
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Public domain illustrated book, catalog, page scan, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain periodicals page scan, free to use, no copyright restrictions image.
Public domain reproduction of portrait print, free to use, no copyright restrictions image - Picryl description
Public domain scan of the book page, free to use, no copyright restrictions image - Picryl description
Public domain image of scientific diagram, 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 illustrated book page scan, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain photograph of a machine, industrial equipment, engine, generator, free to use, no copyright restrictions.
Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Public domain scan of an architecture diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Public domain photograph of industrial architecture, factory building, free to use, no copyright restrictions image - Picryl description
Public domain photograph of American trade card, no copyright restrictions image - Picryl description