Lecture outlines for ranger naturalist talks in Yellowstone National Park, including: Charles B. Hutchins, 1934, "Birds of Yellowstone Park," "Trees of Yellowstone Park," and "National Parks Porfolio" outlines -- David deLancey Condon, [n.d.], "Plant life of Yellowstone Park," "Animal Life of Yellowstone Park," "Birds of Yellowstone Park," and "Glacial and Physiographic Geology of Yellowstone" outlines -- W.B. McDougall, [n.d.], "Wild Flowers," "Nature's Workshop," and "The Geology of the Mammoth District" -- Howard R. Stagner, [n.d.], "Yellowstone Park : Why So Long Undiscovered?," "Animal Ecology," and "Geology of Yellowstone Park" -- Dr. C.P. Russell, 1931-1932, "Interesting Features of the Mammoth Region," "Old Faithful and Vicinity," "Features of Greatest Interest at Yellowstone Lake," "General History Lecture for Yellowstone Park" -- memorandum from the South District Naturalist about evening talks in the South District for 1963 -- quotations about the park by Captain George S. Anderson, Lieutenant Colonel, L.M. Brett, Horace M. Albright, and others -- "Lecture Given on Mount Washburn" by an unidentified person -- brochure for "Educational Entertainment Tour of Phillip Martindale" -- and miscellaneous photographs of park interpretive programs and facilities.