Schiffer Publishing- The Complete Guide to America's National ParksThe complete guide to the national parks, national monuments and memorials, military parks and battlefields, national trails, seashores, rivers and marine conservation areas, national recreation areas, national highways, preserves and reserves of the United States Since 1872, when Yellowstone became Americas inaugural national park, these protected areas have enthralled visitors from around the globe. Currently the 63 national parks attract more than