He served as chairman of the Republican National Committee from 1949 to 1952, and was a member of the New Jersey General Assembly from 1925 to 1929, and was its Speaker in 1929.
After dissolving his law firm in 1959, Gabrielson served as a corporate executive, retaining several posts in the years before his 1976 death.
[2] A lawyer in private life, he was also politically active in New Jersey, serving in the state's General Assembly from 1925 to 1929, and as Speaker during the 1929 session.
In a 1950 article in The New York Times[4] in the wake of McCarthyism,[5] he said homosexuals working for the American government were "perhaps as dangerous as the actual Communists".
He died in Point Pleasant, New Jersey, on May 1, 1976, having outlived Cora Gabrielson by three years, and was survived by a son and daughter.