-
Report Of An Examination Of The Upper Columbia River And The Territory In Its Vicinity In September And October 1881to determine its navigability and adaptability to steamboat transportationBook圖書
-
地圖
-
Index Map Of Upper Columbia River Survey Sheets Nos 1 To 12to accompany report of Capt T W Symons Corps of Engineers dated May 22nd 1895cartographic material地圖