I believe I have a photo of your group! It's a photo taken in front of the fountain on Treasure Island--I gandered it once with a magnifying glass and a flag someone was carrying had the word "electronics" on it. I think! This photo was in the SF Examiner library and was dated 1953--it could have been taken earlier.
If I'm not too late, please write back! Let's look at each other's photos . . .