According to his WW I enlistment record, William Westfall was a self-employed proprietor of a pool hall (and a third, illegible word). He was tall and slender with blue eyes and light hair, and no visible physical abnormalities.
In 1920, William and Bessie lived with Doris in Otter Tail Minnesota. They owned their own home. In 1930, they lived in Ogema, Becker, Minnesota.
Census records from his married life are here.