This primary source comes from the Records of the Environmental Protection Agency.
National Archives Identifier:
545607Full Citation: Documerica Photographer, David Hiser, at Dead Horse Point; 5/1972; Records of the Environmental Protection Agency, Record Group 412. [Online Version, https://docsteach.org/documents/document/documerica-photographer-david-hiser-at-dead-horse-point, April 23, 2024]