Koch, A. C. (1841). Description of the Missourium, or Missouri leviathan: Together with its supposed habits and Indian traditions concerning the location from whence it was exhumed : also, comparisons of the whale, crocodile and Missourium with the leviathan, as described in 41st chapter of the Book of Job ... ([3rd ed., enl.].). E. Fisher.

Koch, Albert C. Description of the Missourium, or Missouri Leviathan: Together with Its Supposed Habits and Indian Traditions Concerning the Location from Whence It Was Exhumed : Also, Comparisons of the Whale, Crocodile and Missourium with the Leviathan, as Described in 41st Chapter of the Book of Job ... [3rd ed., enl.]. E. Fisher, 1841.