%0 Generic %T Transportation access to National Park System : hearing before the Subcommittee on Parks and Recreation of the Committee on Energy and Natural Resources, United States Senate, Ninety-fifth Congress, first session on S. 975, a bill to improve the administration of the National Park System, June 8, 1977. %U https://ezaccess.libraries.psu.edu/login?url=https://www.heinonline.org/HOL/Page?handle=hein.cbhear/trspacnky0001&id=1&size=2&collection=congrec&index=cbhear