Missouri River
Appearance
- "Missouri River," in The American Cyclopædia (1879)
- "Missouri River," in The New International Encyclopædia, New York: Dodd, Mead and Co. (1905)
- "Missouri River," in Encyclopædia Britannica (11th ed., 1911)
- "Missouri (river)," in The New Student's Reference Work, Chicago: F.E. Compton and Co. (1914)
- "Missouri (river)," in Collier's New Encyclopedia, New York: P. F. Collier & Son Co. (1921)