Technology in miniature : American textile patent models 1819-1840 /

by Janssen, Barbara Suit 1950-, Janssen, Barbara Suit 1950-
Published 1988

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

by Janssen, Barbara Suit 1950-
Published 2010

Listings by inventor and residence of inventor /

by Janssen, Barbara Suit 1950-

Listings by patent number and invention name /

by Janssen, Barbara Suit 1950-