In the third book of The Adventures of PEPE QUACKAMOLETM series, "A Duck in the Caboose," PEPE QUACKAMOLETM, a sombrero-wearing, scarf-toting, rubber duck and Fred, his water-shy, desert frog friend, leave the station on a train adventure aboard the Verde Canyon Railroad. With a new friend as a tour guide, they experience the fun, wild beauty of the Verde Valley area from a historic rail line.