TY  - BOOK
AU  - Symons,T.W.
ED  - United States.
TI  - 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
T2  - U. S. 47th Cong., 1st sess. Senate. Ex. doc. 186
AV  - F853 .U58
PY  - 1882///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Columbia River Valley
KW  - United States
KW  - Discovery and exploration
N1  - 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."
ER  -