Once the snow is out of the way, there are games to play!
This is Seth standing on Glenn. (The tree growing out of Seth's head is irrelevant.)
This is May standing on Seth. (I think the sky phenomena are developing marks.)
Though to a modern eye what looks impressive is the work of beating dust out of a carpet in the days before vacuum cleaners, what impressed my father was his sister, the ladylike May, in trousers! Between little chores like this and the wall of split wood behind her, it's no wonder that they had the "core strength" to make bridges of themselves!
Judging from the clothing in other photos, this is probably Glenn, but WHAT is he up to? Or down to? Maybe a somersault.