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drainage was fishless above barrier falls (Jordan (1891). Recent information collected within the Greybull River drainage indicates that there are approximately 99 miles of stream felt to support fish (personal communication, Carter Kruse, University of Wyoming). In addition to the riverine environ- ments, 113 lakes (most notable being Yellowstone Lake) were identified as being historically occu- pied. The Wyoming portion of the historic range, and specifically that portion of the range within and adjacent to Yellowstone National Park, has the most historical information relating to presence and relative abundance. Two of the earliest accounts are associated with explorations directed by John Jacob Astor as part of his involvement in the fur trade in the west. In 1810, Astor supported an expedition lead by Wilson Price Hunt which traveled through the upper portion of the Wind River drainage into the upper Snake River and then on to the lower Columbia River (Franchere 1973). Hunt's diary contained a reference to an abundance of "herring" in the Wind River and it is likely that these fish were either young cutthroat trout or mountain whitefish. Price also mentions the party's limited success to net trout from the upper Snake River drainage. A second expedition, lead by Robert Stuart in 1812, essentially back tracked on a portion of Hunt's travels (Rollins 1935). Stuart's daily account included reports of trout taken from the Portneuf drainage (Marsh Creek), Bear River Drainage (these trout would have been Bonneville cutthroat), the upper Snake River near Big Spring Creek and the Hoback River (although not specifically mentioned these were likely the "fine spotted" form). In 1864, an expedition under the leadership of Major John Owen and Jim Bridger entered the Bighorn drainage from the south in an effort to establish a travel route between the Oregon trail and Montana region (Seymour 1927). Owen's journal recounted the groups travels down the Bighorn River and the first mention of trout occurred when they encountered the Greybull River. A second record of trout was associated with the Shoshone River. Another example is the historical account of U. John Bourke, who was with General Crook's company in 1876 as they entered into the upper Tongue River drainage. Bourke's diary contains comments about a single harvest of 500 fish and an estimation that the 1550 troops had consumed between 10,000 to 15,000 trout during a three week period (Willert 1986). This same area was visited by Evermann and Cox in 1893 and the following observations were made. "Many persons were seen along the river fishing for trout. Taking everything into consideration, it would certainly be hard to find a more ideal trout stream. Small parties have reported as many as 800 fish taken with hook and line in a few days" (Evermann and Cox 1894). Without exception, the early records of cutthroat trout, in and around Yellowstone National Park, refer to the populations as abundant to extremely abundant (Evermann 1891; Jordan 1891; Gilbert and Evermann 1894; Kendall 1914; Trotter and Bisson 1988). There was considerable uncertainty regarding how much of the mainstem Bighorn and Tongue Rivers, within Wyoming, supported cutthroat trout. Early settlers (1870 to 1900) to the Bighorn basin near, Manderson, Wyoming report the presence of turtles, catfish and a fish they referred as "shad" (Personal communication, Mrs. Wanda Bond, Greybull, Wyoming). These fish referred to as "shad" may have been goldeye or even possibly freshwater drum. Mrs. Bond also said that her father indicated that trout were occasionally taken in the Bighorn River but she indicated that "if trout were what the families were interested in they would go to Shell Creek or some other smaller stream". Given that the mainstem Bighorn River as far up as Manderson, Wyoming supported fish and other aquatic species associated with warmer water, it is unlikely that cutthroat trout were anything but occasional visitors resulting from drift out of the tributaries. In discussing the matter with Mr. Ron McKnight, Wyoming Game and Fish Department, he felt that actual historic trout habitat probably extended downstream to somewhere between Worland and Thermopolis. Based on these reports, the main- 18