Report of an examination of the upper Columbia river and the territory in its vicinity in September and October, 1881, to determine its navigability, and adaptability to steamboat transportation
Subtitle: made by direction of the commanding general of the Department of the Columbia
By: by Lieut. Thomas W. Symons ...
Contributors: Symons, T. W. 1849-1920.
Series: Senate executive document (United States. Congress. Senate) -- 47th Cong., 1st sess. ; no. 186.; Western Americana, 1550-1900 -- reel 550, no. 5544.; Senate executive document (United States. Congress. Senate) -- 47th Congress, 1st session, no. 186.
Publisher: Govt. Print. Off.
Published: 1882
Place of publication: Washington
Language: eng
Format: Microform
Number of pages: 135
Subjects: Columbia River Valley; United States -- Discovery and exploration
Notes: 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."

Master microform held by: ResP.

Microfilm. Woodbridge, Conn. : Research Publications, 1975. 1 reel ; 35 mm. (Western Americana ; reel 550, no. 5544)