Rio Colombia.

1844

Duflot de Mofras, Eugene

1:310k

Navigation Chart For the Columbia River, Sheet No. 2

1871

C&GS

1:40k

Catsops Plain. Tillamook Head.

1946

Bascom

Navigation Chart of the Columbia River, Sheet No.2, From Astoria to Katalamet Head

1841

US Ex. Ex.

1:24k

Navigation Chart For the Columbia River, Sheet No.1, Entrance to Upper Astoria

1903

C&GS

1:40k

Oblique Map of Willapa Bay, Washington.

1978

Alpha, Tau Rho

Mouth of Columbia River.

1815

Lewis, Meriwether

Mouth of Columbia River.

1814

Lewis, Meriwether

Navigation Chart of Columbia River

1884

C&GS

1:200k

Approaches to the Columbia River

1884

C&GS

1:20k