Bibliographer University Illinois, Urbana, 1940-1942. Professor University Illinois (Graduate School Library Science), 1963-1980, professor emeritus, since 1980. Reference librarian, assistant to director libraries University Rochester, 1946-1948.
Acquisition librarian Ohio State University, 1950-1953, assistant director libraries, 1953-1960, associate director libraries, 1960-1963.
- Author: Reference Books in the Social Sciences and Humanities, 4th edition, 1977, (with Joan Walton) Reference Work in the Public Library, 1983, (with Linda C. Smith) Reference Work in the University Library, 1986. Editor: University Archives, 1965, Research Methods in Librarianship: Historical and Bibliographical Methods in Library Research, 1971, Supervision of Employees in Libraries, 1979.