Yourdon family photographs: family travels [10]

Black and white photograph of a sizable gathering of people at a campground or picnic area. Ed Yourdon's notes: "Mystery picnic. I really don't know anything about this photo -- no idea when it was taken, or where. I can't identify any of the people in this photo. However, note that two of the men are wearing ties, and that the women are also fairly well dressed. This does not seem to be a casual working lunch in the middle of a day of farm work. … Among the many mysteries is: who took this photo? If indeed it was my grandmother, then where is her husband? Where are Marvin and Ray? And who are all of these people?"