The 'Black Hills dilemma' followed the discovery of gold in South Dakota in 1874. The problem was that the land was guaranteed by treaty for the 'absolute and undisturbed use and occupation of the Indians'. The presence of illegal prospectors therefore provoked Sioux attacks and a war that included Custer's famous defeat at Little Big Horn. This history of the conflict is primarily told through the reports of contemporary newspaper correspondents, both civilian and military, many republished for the first time. Off-mint.