In 1920 William was living as a roomer in the home of J. H. and E. M. Miller. The Millers are husband and wife. His occupation is "Retired reader" or "Retired preacher" or "Retired" something else.
US Census, 1920, Modesto, Stanislaus, California; Roll:T625_151 Page:10B ED:170
Also in 1920 Hal is down in Turlock, which is 20 miles south of Modesto. He is 38 and married, but his wife isn't there. Hal is a roomer too. His mother's birthplace is Massachusetts. His occupation is accountant.
Turlock, Stanislaus, California Roll:T625_152 Page:20B ED:187
I'll see what else I can find the next time I go to the library.