In June 2016, the Smithsonian Institution's National Postal Museum launched an exhibit to commemorate the 100th anniversary of the United State's National Park Service. On this website, visitors can learn more about how national parks evolved throughout history via numerous digitized artifacts including photographs, documents, and ephemera. Visitors can browse categories such as Origins (highlighting the life and work of pioneering conservationists including John Muir and John Wesley Powell), the New Deal (spotlighting the work of the Civilian Conservation Corps and the Federal Arts Project in developing and promoting national parks during the Great Depression), and Wish You Were Here (featuring postcards and souvenirs from national parks over the years.) Each collection features a myriad of colorful images for visitors to examine in detail. Those interested in learning more about the history of U.S. National Parks can check out book suggestions for adults and kids alike in Resources.