_Lamar River_ (5,970)--D : 10--1885--U. S. G. S.--For the Hon. L. Q. C. Lamar, Secretary of the Interior during the first administration of President Cleveland. The stream is locally known only by its original designation, the "East Fork of the Yellowstone." _Lava Creek_--D : 7--1885--U. S. G. S.--Characteristic. _Lewis River_--R : 7--1872--U. S. G. S.--From "Lewis Lake," which see. _Lizard Creek_--U : 6--1885--U. S. G. S.--Characteristic. _Lost Creek_--D : 9--1885--U. S. G. S.--Characteristic. _Lupine Creek_--D : 7--1885--U. S. G. S.--Characteristic. _Lynx Creek_--Q : 13--1885--U. S. G. S.--Characteristic. _Madison River_--G : 1--1805--Lewis and Clark--For James Madison, Secretary of State to Thomas Jefferson. _Magpie Creek_--J : 6--1885--U. S. G. S.--Characteristic. _Maple Creek_--G : 2--1885--U. S. G. S.--Characteristic. _Mason Creek_--L : 16--1881--Norris--For Major Julius W. Mason, U. S. A., commander of escort to Gov. Hoyt, of Wyoming, on the latter's reconnaissance for a wagon road to the Park in 1881. _Meadow Creek_--M : 11--1885--U. S. G. S.--Characteristic. _Middle Creek_--L : 15--1885--U. S. G. S.--Characteristic. _Miller Creek_--G : 13--1880--Norris--For a mountaineer named Miller. See "Calfee Creek." _Mink Creek_--T : 11--1885--U. S. G. S.--Characteristic. _Mist Creek_--I : 14--1885--U. S. G. S.--Characteristic. _Moose Creek_--N : 6--1885--U. S. G. S.--Characteristic. _Moss Creek_--G : 10--1885--U. S. G. S.--Characteristic. _Mountain Creek_--P : 13--1885--U. S. G. S.--Characteristic. _Mountain Ash Creek_--R : 3--1885--U. S. G. S.--Characteristic. _Nez Percé Creek_ (7,237)--J : 4--1878--U. S. G. S.--The Nez Percé Indians passed up this stream on their raid through the Park in 1877. It had previously been called "East Fork of the Firehole." Prof. Bradley, of the U. S. Geological Survey, christened it Hayden's Fork in 1872. (See Chapter XIII, Part I.) _Obsidian Creek_--E : 6--1879--Norris--Characteristic. _Opal Creek_--E : 12--1885--U. S. G. S.--Characteristic. _Otter Creek_--H : 8--1885--U. S. G. S.--Characteristic. _Outlet Creek_--P : 9--1895--U. S. G. S.--Characteristic. _Owl Creek_--T : 5--1885--U. S. G. S.--Characteristic. _Pacific Creek_--W : 11--1873--Jones--Flows from Two-Ocean Pass down the Pacific slope. _Panther Creek_--D : 5--1878--U. S. G. S.--Characteristic. _Pebble Creek_--D : 13--1885--U. S. G. S.--Characteristic. _Pelican Creek_--K : 10--Probably named by the Washburn Party in 1870. Hayden and Barlow, in 1871, use the name as though it were already a fixture. Mr. Hedges says of this stream: "About the mouth of the little stream that we had just crossed were numerous shallows and bars, which were covered by the acre with ducks, geese, huge white-breasted cranes, and long-beaked pelicans, while the solitary albatross, or sea-gull, circled above our heads with a saucy look that drew many a random shot, and cost one, at least, its life."