Second row: June Moffatt, Phil Castora, Marilyn Niven, Milt Stevens, Dave Fox, Fred Patten, Dan Alderson.
I think the occasion was the first BoD meeting in that building, it was, at least, a very early meeting. There's another historical bit: Dave Fox, who's in the photo, was a member of the LA branch of the Science Fiction League before Forry Ackerman, a genuine old-time fan.
Photo by Bill Warren's camera