LINN, Karen. American, b. 1957. Genres: Cultural/Ethnic topics, Music. Career: Smithsonian Institution, National Museum of American History, Washington, DC, researcher, 1988-91; Library of Congress, Washington, DC, archivist, 1991-. Publications: Register of the Sam DeVincent Collection of Illustrated American Sheet Music, 3 vols, 1989; That Half-Barbaric Twang: The Banjo in American Popular Culture, 1991. Contributor to journals. Address: 4816 44th St NW, Washington, DC 20016, U.S.A.