DESCRIBED BY COAST AND GEODETIC SURVEY 1950 THE STATION IS LOCATED IN YELLOWSTONE NATIONAL PARK ABOUT 1.5 MILES WEST-SOUTHWEST OF FISHING BRIDGE.
LAKE ASTRONOMICAL STATION IS 200 FEET EAST OF LAKE LODGE, AND 27 FEET EAST OF THE CENTER OF AN OILED ROAD. THE MARK IS A GRANITE MONUMENT 18 INCHES BY 24 INCHES, AND PROJECTS 3 FEET.
THERE IS A BRASS PLUG IN THE TOP OF THE MONUMENT. THE MONUMENT IS INSCRIBED ALTITUDE 7738.43 ON THE SOUTH SIDE, LATITUDE 44 33 16.1 ON THE WEST SIDE, U.S.C. AND G.S. SURVEY ON THE NORTH SIDE, AND LONGITUDE 110 23 43.1 ON THE EAST SIDE.
http://www.cr.nps.gov/history/categrs/explr/biblio-g4.htm
The most important of Hayden's surveys were in 1871 and 1872 when, with a photographer and later the artist Thomas Moran he entered and explored the Yellowstone region. William H. Jackson's photos and Thomas Moran's paintings helped earlier lobbyists and the lobbyist, N.P. Langford create the world's first national wilderness park. Hayden was not the discoverer of the Yellowstone Park area. The best account of that is N.P. (Nathaniel Pitt) Langford, The Discovery of Yellowstone Park, 1870, NP, 1905, repr. Pb U. of Nebraska Press, Lincoln, NE, 1972. Also see Goetzmann, Exploration and Empire, op. cit. pp. 401-406. There are two recent biographies of Hayden: Mike Foster, Strange Genius: the Life of Ferdinand Vandeveer Hayden, Roberts Rinehart, Univ. of Colorado Press, Boulder, CO, 1994., and James G. Cassidy, Ferdinand V. Hayden, Entrepreneur of Science, U. of Nebraska Press, Lincoln, NE, 2000. Other books that relate to Yellowstone are Thurman Wilkins, Thomas Moran, Artist of the Mountains, U. of Oklahoma Press, Norman, OK, 1998 and Aubrey L. Haines, The Yellowstone Story, A History of Our First National Park, repr. Univ. Press of Colorado, Boulder, CO, 1977. An account of Hayden's excursion in Jackson Hole south of Yellowstone is Orrin H. Bonney and Lorraine G. Bonney, Battle Drums and Geysers, Sage Books the Swallow Press, Chicago, IL, 1970.