 After graduation, he worked in several libraries in Kansas City and St. Louis.Robert Wedgeworth served as University Librarian, Professor of Library Administration and Professor of Library and Information Science at the University of Illinois at Urbana-Champaign (UI) from November 1993 until August 20, 1999 when he retired from the University.The UI Library is the largest public university research library in the world and the third largest of all public and private university research libraries in North America after Harvard and Yale.