This collection contains the letters written by members of the Causten family over the period 1805-1820.
Gift of Leonor K. Sullivan, 1976/1977.
Collection consists of photocopies; originals located at St. Louis University Library, St. Louis, Missouri.
Material pertains primarily to U.S.-Panama treaty negotiations relating to the Panama Canal and a proposed interoceanic Atantic-Pacific sea-level canal.