Evans, Luther Harris, 1902–81, American librarian and political scientist, b. Bastrop co., Tex. After teaching political science at several universities, he became director of the Historical Records Survey under the Work Projects Administration (1935). In 1939 he was appointed director of the legislative reference service of the Library of Congress. Evans was chief assistant librarian of Congress from 1940 to 1945, when he was appointed Librarian. From 1953 to 1958 he was director-general of the United Nations Educational, Scientific and Cultural Organization. Evans was Director of International and Legal Collections, Columbia Univ. Libraries, from 1962 to 1967.