Complex sentence: Weeks was a member of the United States Republican Party and served as the member of a Republican National Committee from 1941 to 1953 and served was the treasurer of the party from 1940 to 1944.
Split into simpler sentences: Weeks was a member of the United States Republican Party and served as the member of a Republican National Committee from 1941 to 1953. He was the treasurer of the party from 1940 to 1944.