This photo is credited as being the pool at Hotel Shelton in New York, but it doesn't match other images of the Shelton pool, so I believe this is another location. Nevertheless, on this day there appears to be some kind of water-spot activity with Houdini in attendance. Can you find Harry?
Click to enlarge.
Thanks to Alex and Keli Hindenach of the American Museum of Magic. Click the links below for other rare unpublished images from their collection.