University of Iowa, lowa City, lowa, 1967-69.
Princeton University, Princeton, N.J., 1972-73.
Brown University, Providence, R.l., 1980-. Plus visiting lecture- and professorships at Columbia University, University of Wisconsin at Superior, University of Maine, The Poetr y Center at the University of Arizona, Brandeis University, Washington University (St. Louis, Cooper Union, UCLA, Temple University, University of Houston, and others.