After a long search I finally found a print that caught my (daydreaming) eye, "Piscina di Sarteano" by Athoy, 1962. An ad for a public pool in Italy where the water is kept at 75 degrees fahrenheit. I could get lost in this print but that wouldn't do me any good when trying to work on my project!
Also, I recently saw Life of Pi and was inspired by the beautiful swimming pool scenes.
Bright colors and ladies in hats and caps!
More inspiration, "Relax" print by Rene Gruau. These ladies are gorgeous. Not sure on the difficulty level for my ad but I am up for the challenge and will make it work!