Missouri Intelligencer and Boon's Lick Advertiser, August 2, 1827
Sibley, Mather, Reeves Ad to Sell Survey Goods, July 20, 1827. Goods left over after finishing the survey for what became known as the Santa Fe Trail.
Mary Ambler Archives
Sibley, George Champlin; Reeves, Benjamin; and Mather, Thomas, "Sibley, Mather, Reeves Ad to Sell Survey Goods, July 20, 1827" (1827). George Champlin Sibley Papers. 372.