You don't see that every day

Remember earlier this year that I had a bit of fun reading up on the nudist panic of the early 1930's in the US and Australia? 

Well, upon stumbling upon a new resource of scanned materials from museums and what not, it's always tempting to just search "nudist" and see what pops up.   That's how I found out (via the Digital Public Library of America) that the Smithsonian has in a box somewhere this photo from 1930:

The description is: Staged nudist wedding on a parade float with a mechanical dinosaur.

I have a suspicion that these particular nudists were trying to really annoy the anti-evolutionists in the South, but I could be wrong...