Ohio State University, Visiting Professor, 2004
University of Melbourne, Visiting Professor, 2003
Grinnell College, Director of the Noyce Visitor Program, 1998-2003
Grinnell College, Myra Steele Professor of Mathematics, 1991-
Wake Forest University, Visiting Professor, 1997
Macquarie University, Center for Number Theory, Visiting Research Professor, 1996
University of Chicago, Visiting Professor, 1989-1990
University of Chicago, Visiting Scholar, 1983-1984
Grinnell College, Professor, 1972-1991
Grinnell College, Associate Professor, 1968-1972
Harvard University, Honorary Research Fellow, 1968-1969
Grinnell College, Assistant Professor, 1964-1968
Grinnell College, Instructor, 1962-1964
Columbia University, Instructor, 1959-1962
IBM, Programmer, 1956
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http://www.math.grinnell.edu/faculty/Adelberg-positions-held.xhtml