CHAPTER XI: ENDNOTES 385. Bernard DeVoto, "Let's Close the National Parks," Harper's Magazine October, 1953, 49-52. 386. John Ise, Our National Park Policy, A Critical History (Baltimore: Resources for the Future, Inc., by the John Hopkins Press, 1961), 546-550. 387. "MISSION 66 For Yellowstone National Park," National Park Service, United States Department of Interior, unpublished document, Library, Rocky Mountain Regional Office, Denver, Colorado. 389. Memorandum to Chief, Western Office, Division of Design and Construction, Through, Chief, Division of Design and Construction, from Assistant Director of National Park Service Thomas Allen, 13 February 1956, Record Group 79, Yellowstone National Park, Box 10, Roads, National Archives and Records Center, Denver, Colorado. 390. Memorandum to Chief, Western Office, Division of Design and Construction from Park Landscape Architect Charles Krueger, 17 January 1956, Record Group 79, Yellowstone National Park, Box 10, National Archives and Record Center, Denver, Colorado. 392. See Appendix D for the Major and Minor Road Program for 1957-1967. Record Group 79, Yellowstone National Park, Box 10, National Archives and Records Center, Denver, Colorado. 393. Memorandum to Regional Director, Region Two, National Park Service from Superintendent, Yellowstone National Park, 17 August 1956. Letter to Mr. Edmund Rogers, Superintendent, Yellowstone National Park from Mr. K. S. Chamberlain, Division Engineer, Bureau of Public Roads, 6 September 1956. Memorandum to Regional Director, Region Two, National Park Service from Superintendent, Yellowstone National Park, 13 September 1956, Record Group 79, Yellowstone National Park, Box 10, National Archives and Records Center, Denver, Colorado. 394. Harold Bradley, "Roads in Our National Parks," National Parks Magazine, February, 1959. 6. 395. The fourteen major bridges constructed during the Mission 66 period.
396. The four bridges built during the 1970s were the following:
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