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488. The Secretary of the Interior's Standards for Historic Preservation Projects. Washington, D.C.: Office of Archeology and Historic Preservation, n.d. H3.6/No. 4, Box: 43. William J. Cohen papers, MSS 0468. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/192559 Accessed September 19, 2024.