William Clark diary, August 25, 1808 - September 22, 1808


Date: August 25, 1808 - September 22, 1808 | Size: 1 volume(s), 1 volume, 42 p.


William Clark kept this diary on an expedition to make a treaty with the Osage Indians in the Missouri Territory. A sketch drawn under the September 16 entry is apparently a draft of Clark's Fort Osage map, while the first page of notes presents color scheme used on another draft. See Kate L. Gregg, Westward with Dragoons (1937: 48) for the map in printed version.

Background note

After the Lewis and Clark Expedition (1804-1806), explorer and Indian agent, William Clark became governor of the Missouri Territory and acted as superintendent of Indian affairs at St. Louis.

Collection Information

Physical description

1 volume, 42 p.


Gift from Edward and Charles Biddle, 1915; presented by Charles J. Biddle and accessioned, 1949 (53055).

Early American History Note

This document is a private journal of William Clark from his time as an Indian agent in the Midwest after the completion of the Lewis and Clark expedition. The journal chronicles his expedition to treat with the Osage Indians. The journal contains a wealth of information, including a vivid account of every days' events, a sketch of a map, and a chronicle of the Indian-white relations.


This diary was published in its entirety in Kate L. Gregg, ed., Westward with Dragoons, (Fulton, Mo., 1937).

Indexing Terms


  • Diaries.
  • Sketchbooks
  • Sketches.
  • Travel Narratives and Journals

Geographic Name(s)

  • Fort Osage (Mo.)
  • Missouri -- Description and travel.


  • Indians of North America -- Treaties
  • Native America
  • Osage Indians -- Treaties
  • Trade
  • Travel

Detailed Inventory

 Clark, William, 1770-1838.
Fort Osage (draft)
18081 map, 10.2 x 16.5 cm