worker of the Black Hills Institute, discovered a fossil in the Cheyenne River Indian Reservation in western South Dakota. The bones were found on the land of Maurice Williams, a member of the local Sioux [...] “Sue.” Read more... The Antiquities Act of 1906 The beginning of the 20th century witnessed increased lobbying efforts by Edgar L. Hewett, an anthropologist and archaeologist, for the establishment of protected [...] Sioux Tribe. The Black Hills Institute, led by Peter Larson, paid 5,000 US dollars for the fossil to Maurice Williams and excavated a Tyrannosaurus rex that became known under the name of its discoverer
https://www.iaa.uni-rostock.de/forschung/laufende-forschungsprojekte/american-antiquities-prof-mackenthun/project/law-1/