Fort Osage (1808-1827) - First established in 1808 by Gen. William Clark as Clark's Fort. Named after Gen William Clark and officially named Fort Osage on 10 Nov 1808. Abandoned in 1827. Also known as Clark's Fort, Fort Clark (3), Fiery Prairie Fort and Fort Sibley.
Fort Osage History
Originally sited by the Lewis and Clark expedition in 1804, General William Clark returned in 1808 to superintend the construction. The fort was built as both a government trading post and a military post to assert American control of the area. It was the first U.S. government post in the Louisiana Territory.
George C. Sibley was the first U.S. Factor to oversee the trading operation of the post. The first military garrison consisted of one company 1st U.S. Infantry and one company of St. Charles Dragoons. The post was built by the initial garrison as a five sided log fort with a blockhouse at each corner on a high promontory overlooking the Missouri River.
The post was abandoned in June 1813 during the War of 1812 and regarrisoned in July 1816. The trading operation continued until 1822 when the U.S. Factory system was discontinued. The military garrisoned the post sporadically until 1827 when Fort Leavenworth was built and then it was abandoned.
The fort is reconstructed as it looked in 1808 and contains original blockhouse cannon.
Location: Fort Osage National Historic Landmark, Jackson County, Missouri.
Maps & Images
Lat: 39.1875 Long: -94.1930556
- Roberts, Robert B., Encyclopedia of Historic Forts: The Military, Pioneer, and Trading Posts of the United States, Macmillan, New York, 1988, 10th printing, ISBN 0-02-926880-X, page 461
Visited: 23 Jun 2010
Fort Osage Picture Gallery
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