File Level, Great Lakes Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water
File Level, Lake Michigan/Illinois River, Juris of Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water
File Pollution, General In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water
File Detroit River Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water » Pollution, General
File Great Lakes Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water » Pollution, General
File Lake Erie Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water » Pollution, General
File Rivers, Lakes Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water » Pollution, General
File Supply Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Natural Resources » Water
File Post Office In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966
File Objectionable Mailings Box 160 In: Philip A. Hart papers, 1949-1976 (majority within 1959-1976) » Subject files, 1959-1976 » 1966 » Post Office