Hi Rich, your friends DI life preserver find triggered my memory. I have a file with a bunch of random Nevada photos, (which took me a few to find) that I knew I had a few photos of gals posing at the DI pool. These are photo prints from the Las Vegas News Bureau archives and along with the photos are Jack Cortez', Fabulous Las Vegas Magazine letterhead with short bio of the gals posed in the pics. Sure enough, if you look at the photo of Jane Madsen you can see the life preserver used as a decor item that surrounds the pool clock. Could it be the same one? Who knows but this pic gives the item some reference. Have a good Memorial Day.
Eric

Here's the other images.