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Valve Hopper Closets, Porcelain-Lined.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Valve Hopper Closets, Porcelain-Lined and Painted Iron.
Public domain photograph of 19th-century painting, free to use, no copyright restrictions image - Picryl description
Valve Hopper Closets, Porcelain-Lined.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description