_Terrace Mountain_ (8,100)--C: 6--1878--U. S. G. S.--Characteristic. _Teton, Grand_ (13,691)--Not on Map.--This mountain has borne its present name for upward of four score years. Through more than half a century it was a cynosure to the wandering trapper, miner and explorer. The name has passed into all the literature of that period, which will ever remain one of the most fascinating in our western history. Indeed, it has become the classic designation of the most interesting historic summit of the Rocky Mountains. That it should always retain this designation in memory of the nameless pioneers who have been guided by it across the wilderness, and thousands of whom have perished beneath its shadow, would seem to be a self-evident proposition. Individual merit, no matter how great, can never justify the usurpation of its place by any personal name whatever. An attempt to do this was made in 1872 by the United States Geological Survey who rechristened it Mt. Hayden. The new name has never gained any local standing, and although it has crept into many maps its continued use ought to be discouraged. It is greatly to the credit of Dr. Hayden that he personally disapproved the change, so far at least, as very rarely, if ever, to refer to the mountain by its new name. _Three Rivers Peak_ (9,900)--E: 4--1885--U. S. G. S.--Branches of the Madison, Gallatin and Gardiner Rivers take their rise from its slopes. _Thunderer, The_ (10,400)--D: 14--1885--U. S. G. S.--Seemingly a great focus for thunder storms. _Top Notch Peak_ (10,000)--L: 13--1895--U. S. G. S.--Characteristic. _Trident, The_ (10,000)--Q-R: 14--1885--U. S. G. S.--Characteristic. _Trilobite Point_ (9,900)--F: 4--1885--U. S. G. S.--Characteristic. _Turret Mountain_ (10,400)--P: 14--1878--Characteristic.--Called by Captain Jones "Round-head or Watch Tower." _Twin Buttes_ (8,400)--K: 14--1870--Washburn Party.--Characteristic. _Washburn, Mt._ (10,000)--F: 9--1870--Washburn Party.--For General Henry Dana Washburn, chief of the Yellowstone Expedition of 1870. General Washburn was born in Windsor, Vt., March 28, 1832. His parents moved to Ohio during his infancy. He received a common school education and at fourteen began teaching school. He entered Oberlin College, but did not complete his course. At eighteen he went to Indiana where he resumed school-teaching. At twenty-one he entered the New York State and National Law School, from which he graduated. At twenty-three he was elected auditor of Vermilion county, Indiana.