Bob,
The census form indicates that his occupation is editor of a golf magazine. I looked at all the A... Wilsons in LA county in 1920 and didn't see a likely candidate. There were no Herbert Wilsons.
There is an article by "The Golfer" in the Nov 29, 1925 issue of the LATimes titled "Lakeside Wonder Course" which according to the summary mentions Herbert Wilson. They subhead of the article is "Immaculate Greens and Promising Fairways Prove Golfing Revelation to Local Fraternity." The LA Times charges for access to the full article so I didn't d/l it, cheap guy that I am. There are a couple other articles during the 20s that mention Herbert Wilson but this one seems to have the most promise.