1.	"Black Holes," Undergraduate Semester Course, Department of Astronomy, 
	University of Illinois, Fall 1983 and 1984.

2.	"General Relativity," Graduate Semester Course, Departments of Physics and 
	Astronomy, University of Illinois, Fall 1981 and 1983.

3.	"The Physical Universe," Undergraduate Semester Course, Department of 
	Astronomy, University of Illinois, Spring 1980, 1981 and 1983.

4.	"Descriptive Astronomy," Undergraduate Semester Course, Department of 
	Astronomy, University of Illinois, Spring 1982 and Fall 1982.

5.	"Thought and Structure in Physical Science," Undergraduate Semester Course, 
	Department of Astronomy, University of Illinois, Fall 1979 and 1980.

6.	"The Interstellar Medium," Senior Level Undergraduate Semester Course, 
	Department of Astrophysical Sciences, Princeton University, Spring 1975.