Albert Koch owned the St. Louis Museum until he sold it to William McPherson in 1841. During the later years of the 1830s he began traveling to excavate fossils to display in his museum. The Missourium, like his later Zeuglodon skeletons, was a specimen so great that Koch closed his museum and took it on a tour to Europe where it was eventually sold. This publication of Koch's description of the Missourium was published in St. Louis prior to his departure and accompanied his exhibitions.
Speech of Hon. J.H. Thomas of Tennessee in the House of Representatives. In Committee of the Whole on the State of the Union, on the Bill to Authroize a Loan Not Exceeding Eighteen Million Five Hundred Thousand Dollars.
In Support of His Resolutions (Which Passed Unanimously, In Favor of a) National R. Road to the Pacific, on the Plan of Geo. Wilkes. Delivered at the Great River and Harbor Convention