Report of an examination of the upper Columbia river and the territory in its vicinity in September and October, 1881
Subtitle: to determine its navigability, and adaptability to steamboat transportation.
By: Made by direction of the commanding general of the Department of the Columbia, by Lieut. Thomas W. Symons.
Contributors: Symons, T. W. 1849-1920.
Series: U. S. 47th Cong., 1st sess. Senate. Ex. doc. 186
Publisher: Govt. Print. Off.
Published: 1882
Place of publication: Washington
Language: eng
Number of pages: 135
Subjects: Columbia River Valley; United States -- Exploring expeditions
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."