Brief synthesisThe Kluane / Wrangell-St. Elias / Glacier Bay / Tatshenshini-Alsek national parks and protected areas along the boundary of Canada and the United States of America contain the largest non-polar icefield in the world as well as examples of some of the world’s longest and most spectacular glaciers. These agreements have also established the Kluane National Park Management Board, a co-operative management regime for managing park resources. Wrangell-St. Elias and Glacier Bay National Park and Preserves are administered under the authority of the Organic Act of August 25, 1916 which established the United States National Park Service, as well as specific enabling legislation for each park and other laws and regulations pertaining to the National Park Service. The Yakutat Tlingit Tribe agreement involves both Wrangell-St. Elias and Glacier Bay National Parks. Glacier Bay National Park also has a government-to-government relationship with the Huna Tlingit Tribe.