Doc,
That's what I remember. At Whittier Narrows in the late 60s, any given weekend there would be as many as a hundred fliers with families in tow. My cousin and his son (my age) along with me would show up and get in our flights. 4 circles and the flight line was usually 15 to 20 planes deep at any given time, dawn to dark. The contests were unreal with the fences lined 2 or 3 rows deep with planes. It was a lot of fun. The far circles were swampy, but no one seemed to mind all that much. There was a contest about once a month over the spring, summer and fall and it was a great deal of fun just to watch.
My cousin was a camera buff in addition to flying and he took many, many pictures. But unfortunately, his wife tossed his photo albums when he died and they are lost forever. Shame, that. I was just wondering if anyone else that attended these contests took pictures.