The Register's website features an article with more details about Clark's life.
The photo above shows Clark at his desk in the County Hall of Administration in 1971. The image below shows Clark (left) at the dedication of an O.C. Historical Commission plaque at Knott's Berry Farm in 1977. Also in the photo are Historical Commissioner Don Dobmeier and Virginia Knott.
The plaque shown above has gone missing over the years. (These things happen.) Coincidentally, the plaque will be replaced this very Saturday at an event honoring the 75th anniversary of Mrs. Knott's Chicken Dinner Restaurant. It should be quite a gathering of former and current employees, local historians, theme park aficionados, and at least one or two members of the Knott family.
[Correction (6-9-09): The old plaque has finally been found and will be re-dedicated and put back on display at Saturday's event.]
I plan to post more photos and information about this storied dining establishment as the week goes on. For now, see the Register's article about the anniversary or their readers' memories of chicken dinners past. (They also have a short video interview with Marion Knott.)
Architecture fans, please note: I've updated Friday's post about the Mr. & Mrs. Haines House in Dana Point. The mystery is not yet solved, but we have a couple more clues.