May pole dance at the White House Easter Egg Roll, Monday, April 1, 1929, National Photo Company Collection, via Library of Congress Prints and Photographs Division.
First Lady Lou Hoover added May pole and folk dancing to the annual event — but only briefly. Apparently, the Depression was bad enough on its own.
(If you click on the photo and enlarge it, you can see the wonderfully fierce expression of one of the girls on the right side.)
enclos*ure 
beautiful picture!
It looks like the ribbons aren’t exactly winding around the pole as they should, though. Ha!
I think you’re right. They’re weaving off to one side of the pole. They seem to be going at it with a lot of energy though.