Within a few years of the signing, Anglo hunters invaded the treaty land. They killed bison by the millions, stockpiling hides and horns for a lucrative trade back east. Seven million pounds of bison tongues were shipped out of Dodge City, Kansas, in a single two-year period, 1872–1873, a time when one government agent estimated the killing at twenty-five million. Bones, bleaching in the sun in great piles at railroad terminals, were used for fertilizer, selling for up to ten dollars a ton. Among the gluttons for killing was a professional buffalo hunter named Tom Nixon, who said he had once
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