The National Park Service (NPS) has hired Historical Research Associates, Inc. to collect historical documents that may bear on Indians' hunting, finishing, and other use rights at Yellowstone National Park, Grand Teton National Park, and the National Elk Refuge for future use within the Park Service. The following research includes documents collected related to Yellowstone National Park only. Archival evidence suggests that American Indians have maintained a continual presence and/or interest in Yellowstone National Park from times before the park's inception to present day. American Indians have been a part of Yellowstone's resources whether it be in the form of hunting or involvement in resource exchange or participating in management schemes. Over eighty different American Indian tribes, agencies, organizations, and individuals have been identified as being involved in Yellowstone's resources throughout its history. While it is believed that the search through Yellowstone's archives was on the whole exhaustive, there are a few areas which were not thoroughly examined. Several early years of scout reports and Annual Reports from the superintedent were perused, but due to the relative lack of information found, the entire catalog of each was not searched. Due to the fact that much of the early correspondence among Yellowstone National Park, the Department of the Interior, and Indian Agencies prominently involved the input and communication of Indian Agents, I believe it would behoove subsequent researchers to search the depositories within or for each Indian Agency related to the Park. Also, because the document search at the National Archives was limited to only three tribes, it would be beneficial to expand the further searches there to include more of the tribes associated with the park.