Letter from the Secretary of War
Subtitle: transmitting in response to Senate resolution of April 5, 1882, a letter from the Chief of Engineers, the accompanying copy of a report from Lieut. T.W. Symons, Corps of Engineers, embracing all the information in this department respecting the navigable waters of the Upper Columbia River and its tributaries, and of the country adjacent thereto
Contributors: Symons, T. W. (Thomas William), 1849-1920
Series: U.S. 47th Congress, 1st Session. Senate. Ex. Doc -- 186; Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I; Senate executive document (United States. Congress. Senate) -- 47th Congress, 1st session, no. 186.
Publisher: G.P.O.
Published: 1882
Place of publication: Washington
Language: eng
Number of pages: 135
Subjects: Discoveries in geography; American; Discovery and exploration
Other titles: Upper Columbia River, and the Great Plain of the Columbia
Notes: Added t.p.: The Upper Columbia River, and the Great Plain of the Columbia.

Appended is "Map of the upper Columbia river. 25 sheets and an index sheet. From surveys and examinations made in 1881, by Lieut. Thomas W. Symons ... and Alfred Downing ... Drawn by Alfred Downing ... These sheets are numbered consecutively from the boundary to Snake River, and can be joined ... showing the river continuously."

Reproduction of the original from the Library of Congress.