when did olympic national park became a park
Olympic National Park U.S. President Theodore Roosevelt originally created Mount Olympus National Monument on 2 March 1909.[7][8] It was designated a national park by President Franklin Roosevelt on June 29, 1938. In 1976, Olympic National Park was designated by UNESCO as an International Biosphere Reserve, and in 1981 as a World Heritage Site. In 1988, Congress designated 95 percent of the park as the Olympic Wilderness.[9][10]