ROBERT B. MARKS RIDINGER is Chair, Humanities and Behavioral Sciences Division in the University Libraries at Northern Illinois University. He is the author of The ADVOCATE Index, 1967-1982, and The Peace Corps: An Annotated Bibliography (1989), and coauthor of Anthropological Fieldwork: An Annotated Bibliography (1988). In addition, he has served on the editorial board of the Library-Anthropology Resources Group publication, Biographical Directory of Anthropologists Born Before 1920 (1988).