| Judicial Administration | Minnesota Supreme Court (Secretary to Chief Justice Henry M. Gallagher) | | ??/??/1939 to ??/??/1940 |
| U.S. Executive Branch | United States Federal Bureau of Investigation (World War II, Guarded the Secrets of the Manhattan Project, Special Agent) | | ??/??/1942 to ??/??/1945 |
| Judge | Minnesota Supreme Court (Associate Justice, Appointed by Governor Elmer L. Andersen, Then Elected) | Appointed | 01/08/1963 to 07/01/1970 |
| Judge | Minnesota Supreme Court (Chief Justice, Appointed by Governor Wendell Anderson, Then Elected) | Appointed | 12/18/1973 to 12/18/1981 |