This primary source comes from the Records of the Environmental Protection Agency.
National Archives Identifier:
551682Full Citation: Picnic in Central Park; 5/1973; DOCUMERICA: The Environmental Protection Agency's Program to Photographically Document Subjects of Environmental Concern, 1972 - 1977; Records of the Environmental Protection Agency, Record Group 412; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/picnic-in-central-park, December 4, 2023]