Librarian University Oslo, 1922-1933. Assistant professor general literature, 1933-1938. Librarian Royal Academy, Trondheim, Norway, 1938-1946.
On leave as consultant Library of Congress, Washington, 1941-1943, as chief regional specialist United States Office of War Information, 1943-1945. Professor American literature University Oslo, 1946-1973, founder, director American Institute, 1948-1973, president International Summer School, 1958-1968. President Det Norske Samlaget, 1949-1972.
- The United States in Norwegian History.: (Contributions in American Studies)
- Greenwood Press, 1976, As new.
- Solregn: Ein sjølvbiografi (Norwegian Edition)
- Book by Skard, Sigmund