Steve,
I haven't played Yorba Linda in some years, last time was about 1986, but back then it was surprisngly fun and for me (at least back then) a sneeky long golf course.
The club has had it share of great golfers too. Bobby May played out of there.
In the old days, (back then) Yorba Linda was set in between beautiful groves of oranges, horse trails and ranch houses. Now it's just a shell of its former self. The area is mass populated.
I believe the course is owned, or at at one time was owned by American Golf. One of their few private clubs.