Yamhill River

1980

1:100k

Nehalem entrance.

1946

Bascom

Cape Lookout,

1946

Bascom

Columbia Highway America's Premier Scenic Asset.

1915

Portland Chamber of Commerce

Sand Lake Entrance.

1946

Bascom

The Columbia River : Through the Cascade Mountains to the Pacific Ocean

1905

Oregon Railway and Navigation Company

Nestucca River Entrance.

1946

Bascom

(Sheet 3) Map Of Washington Territory West of the Cascade Mountains. Compiled from the Government Surveys by Chas. A. White, C.E. 1870. Engraved, Printed, Manufactured And Published By G.W. & C.B. Colton & Co. No. 172 William St. New York.

1870

White, Charles A.

1:253k

Nehkahnie Mountain, Smugglers Cove.

1946

Bascom

Rio Colombia.

1844

Duflot de Mofras, Eugene

1:310k