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Optical devices - Knight's pictorial gallery of arts
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Optical devices - Knight's pictorial gallery of arts
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Vue générale de la ville de Rio de Janeiro prise de Couvent de St. Ben...
Public domain illustrated book page scan, related to travels, free to use, no copyright restrictions image - Picryl description