The second image is of a cute play ground area. I believe this may be the Santa Ana Zoo as on the same page was some images from Knott's Berry Farm. It may be Los Angeles but it does not look like San Diego. The little flying saucers do look like they were fun to play in.
Finally I believe this image is from the San Diego County Fair. It does look somewhat like Knotts, but not as permanent. Notice in the far right corner is a hanging. I also like the shuffle board building.