Blackwood's Edinburgh Magazine, Volume 64, No.394, August, 1848

La Bonté and his companions proceeded up the river, the Black Hills on their left hand, from which several small creeks or feeders swell the waters of the North Fork. Along these they hunted unsuccessfully for beaver "sign," and it was evident that the spring hunt had almost entirely exterminated the animal from this vicinity. Following Deer Creek to the ridge of the Black Hills, they crossed the mountain on to the waters of the Medicine Bow, and here they discovered a few lodges, and La Bonté set his first trap. He and old Luke finding "cuttings" near the camp, followed the "sign" along the bank until the practised eye of the latter discovered a "slide," where the beaver had ascended the bank to chop the trunk of a cotton wood, and convey the bark to its lodge. Taking a trap from "sack," the old hunter after "setting" the "trigger," placed it carefully under the water, where the "slide" entered the stream, securing the chain to the stem of a sappling on the bank; while a stick, also attached to the trap by a thong, floated down the stream, to mark the position of the trap, should the animal carry it away. A little farther on, and near another "run," three traps were set; and over these Luke placed a little stick, which he first dipped into a mysterious-looking phial which contained his "medicine.

The country where La Bonté and his companions were trapping, is very curiously situated in the extensive bend of the Platte which encloses the Black Hill range on the north, and which bounds the large expanse of broken tract known as the Laramie Plains, their southern limit being the base of the Medicine Bow Mountains. From the north-western corner of the bend, an inconsiderable range extends to the westward, gradually decreasing in height until they reach an elevated plain, which forms a break in the stupendous chain of the Rocky Mountains, and affords their easy passage, now known as the Great, or South Pass. So gradual is the ascent of this portion of the mountain, that the traveller can scarcely believe that he is crossing the dividing ridge between the waters which flow into the Atlantic and Pacific Oceans, and in a few  minutes can fling a stick into two neighbouring streams, one of which would be carried thousands of miles, which the eastern waters traverse in their course to the Gulf of Mexico, the other, borne a lesser distance, to the Gulf of California.

Trapping with tolerable success in this vicinity, as soon as the premonitory storms of approaching winter warned them to leave the mountains, they crossed over to the waters of Green River, one of the affluents of the Colorado, intending to winter at a rendezvous to be held in "Brown's Hole"—an enclosed valley so called, which, abounding in game, and sheltered on every side by lofty mountains, is a favourite wintering-ground of the mountaineers. Here they found several trapping bands already arrived; and a trader from the Uintah country, with store of powder, lead, and tobacco, prepared to ease them of their hardly earned peltries.