My first reaction when I saw these was “Hey, cool, a tumbling squad!” Tumblers, like pole vaulters, are usually good for a striking photograph or two.
Here they are:
And here they are, well, tumbling, I guess:
My second thought was “Is there any way to date these?” We can start with the building in the background, which is clearly the original field house. This means it could be no earlier than 1921. But in the top picture you get a really good look at the shrubbery near the window. I’m sure you all remember that we’ve seen shrubbery like that before–in this inexplicable photograph that may (or may not) show a seated Knute Rockne:
This picture was taken at the east end of the building and the tumblers were at the west end but the size of the shrubs is just about the same. I know this one was taken in 1929 so I’m going to call the tumblers circa that same year.
Anybody want to argue with me?
Bonus: Came across this yesterday in George R. Brown, where they’re getting ready for a remodel. It’s small enough that I think it might have been meant to be portable.