All I can tell you about this vintage snapshot is that it's from the George Kallman collection, specifically from his mother, Lorena Aina Beck's, photo album.
I have no idea what is going on here, but I can speculate. It's an odd photo.
Click on image to see it larger.
This is my submission for this weeks Sepia Saturday. From the prompt image I went with groups of people doing things that make no sense to me, but for which I know there is a story.