Lot of about 33 1950s vintage professionally shot and mounted vintage slides with photos of the National Parks and more! There are: 7 slides marked Atkins Travel Slides that show the Grand Canyon; 7 slides for Death Valley National Park; 8 slides of Mt Ranier National Park; 8 slides for the -Canadian Northwest- and 3 slides stamped for the Petrified Forest Museum Association (with a great photo of a petrified tree.