Dr. Halvorson is born in Berlin, Ohio to Otto P. and Adele B. Halvorson.
Dr. Halvorson receives a Bachelor of Arts from Dartmouth College.
Dr. Halvorson marries Judith A. Devaud.
Dr. Halvorson receives a Master of Arts from the University of Cincinnati.
Dr. Halvorson becomes an instructor at the University of Cincinnati.
Dr. Halvorson becomes a geographer for the United States Army Corps Engineers in Cincinnati, Ohio.
Dr. Halvorson becomes an assistant professor at the University of Northern Colorado in Greeley, Colorado.
Dr. Halvorson receives a Doctor of Philosophy from the University of Cincinnati.
Dr. Halvorson becomes assistant and then associate professor at the University of Connecticut.
Dr. Halvorson serves as president of the American Association of University Professors.
Dr. Halvorson becomes a department head at the University of Connecticut.
Dr. Halvorson is promoted to full professor at the University of Connecticut.
Dr. Halvorson is appointed chairperson of the Commencement Committee at the University of Connecticut.
Dr. Halvorson becomes special assistant to the president of the University of Connecticut.
Dr. Halvorson is named Outstanding Faculty Advisor at the University of Connecticut.
Dr. Halvorson becomes Professor Emeritus.