Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The smallpox epidemic that ravaged the people of the Great Plains in 1837 and 1838 was believed to have begun in spring of 1837 when a deckhand became ill aboard an American Fur Company steamboat named S.S. St. Peter. The steamboat traveling up the Missouri River to Fort Union from St. Louis, docked at Fort Clark near the two earth-lodge villages of the Mandan people on June 18 1837. The disease spread to the Mandan people . In July 1837, the Mandan numbered no more than 2,000, by October that number had dwindled to 138. On August 11, Francis Chadron, a trader at Fort Clark, wrote,“I Keep no a/c of the dead, as they die so fast it is impossible”.

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