Chattahoochee River, Seward, Chickasaw NRA, and Valley Forge National Historical Park : hearing before the Subcommittee on Parks and Recreation of the Committee on Interior and Insular Affairs, United States Senate, Ninety-fourth Congress, first session on S. 661, a bill to authorize the establishment of the Chattahoochee River National Recreation Area in the State of Georgia, and for other purposes ; S. 847, a bill to establish the Seward National Recreation Area in the State of Alaska, and for other purposes ; S. 1725, a bill to authorize the establish the Chickasaw National Recreation Area in the State of Oklahoma, and for other purposes ; [and] S.1776, a bill to authorize the Secretary of the Interior to establish the Valley Forge National Historical Park in the Commonwealth of Pennsylvania, and for other purposes, October 30, 1975.