Efforts have been made to trace this inscription to some of the early noted trappers, but the attempt can hardly succeed. Even if an identity of initials were established, the identity of individuals would still remain in doubt. Nothing short of some authentic record of such a visit as must have taken place can satisfy the requirements of the case. In the absence of any such record, the most that can be said is that the inscription is proof positive that the Park country was visited by white men, after Colter's time, fully fifty years before its final discovery. Col. Norris' researches disclosed other similar evidence, although in no other instance with so plain a clue as to date. Near Beaver Lake and Obsidian Cliff, he found, in 1878, a cache of marten traps of an old pattern used by the Hudson's Bay Company's trappers fifty years before. He also examined the ruins of an ancient block-house discovered by Frederick Bottler at the base of Mt. Washburn, near the Grand Cañon of the Yellowstone. Its decayed condition indicated great age. In other places, the stumps of trees, old logs used to cross streams, and many similar proofs, were brought to light by that inveterate ranger of the wilderness. The Washburn party, in 1870, discovered on the east bank of the Yellowstone, just above Mud Geyser, the remains of a pit, probably once used for concealment in shooting water fowl. In 1882, there was still living in Montana, at the advanced age of one hundred and two years, a Frenchman by the name of Baptiste Ducharne. This man spent the summers of 1824 and 1826 on the Upper Yellowstone River trapping for beaver. He saw the Grand Cañon and Falls of the Yellowstone and the Yellowstone Lake. He passed through the geyser regions, and could accurately describe them more than half a century after he had seen them.