Student, Oslo Conservatory, Oslo U., 1941-1943; Bachelor of Music, St. Olaf College, 1947; Bachelor of Arts, St. Olaf College, 1949; Master of Arts, University Washington, 1954; Doctor of Philosophy, University Washington, 1975.
Member of faculty, St Olaf College, Northfield, Minnesota, 1946-1993; director international studies, St. Olaf College, Northfield, Minnesota, 1964-1975; professor art and Norwegian, director galleries, St. Olaf College, Northfield, Minnesota, 1975-1987; retired, St. Olaf College, Northfield, Minnesota, since 1987. Consultant Minneapolis Institute Arts.
(Book by Dittmann, Reidar)
Chairman Rice County Democratic-Farmer Labor Party, 1961-1962. Served with Norwegian Resistance, 1941-1943. Interned in Buchenwald Camp, 1943-1945.
Served with Norwegian Army Intelligence, 1945. Member Norwegian-American History Association (executive board), Society Advancement Scandinavian Studies, College Art Association, Phi Beta Kappa.
Married Chrisma J. Skoien, December 18, 1947. Children: Reidar, Solveig, Rolf, Kristin, Lisa.