National Park Service: Comments on Provisions of S. 2543, a Bill to Establish a Federal Program and Criteria for National Heritage Areas, text, June 24, 2004; (https://digital.library.unt.edu/ark:/67531/metadc292413/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .