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Patent models index : guide to the collections of the National Museum of American History, Smithsonian Institution / Barbara Suit Janssen.

Technology in miniature : American textile patent models, 1819-1840 / Barbara Suit Janssen.

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Active filters:

Patent models index : guide to the collections of the National Museum of American History, Smithsonian Institution / Barbara Suit Janssen.

Technology in miniature : American textile patent models, 1819-1840 / Barbara Suit Janssen.