Preuss, C., & Frémont, J. C. (1849). Topographical map of the road from Missouri to Oregon commencing at the mouth of the Kansas in the Missouri River and ending at the mouth of the Wallah Wallah in the Columbia: In VII sections ... Lithogr. by E. Weber & Co..
Chicago Style (17th ed.) CitationPreuss, Charles, and John Charles Frémont. Topographical Map of the Road from Missouri to Oregon Commencing at the Mouth of the Kansas in the Missouri River and Ending at the Mouth of the Wallah Wallah in the Columbia: In VII Sections ... Baltimore: Lithogr. by E. Weber & Co., 1849.
MLA (8th ed.) CitationPreuss, Charles, and John Charles Frémont. Topographical Map of the Road from Missouri to Oregon Commencing at the Mouth of the Kansas in the Missouri River and Ending at the Mouth of the Wallah Wallah in the Columbia: In VII Sections ... Lithogr. by E. Weber & Co., 1849.