Oblique Map of Willapa Bay, Washington.

1978

Alpha, Tau Rho

North Beach Washington on Line of Union Pacific System.

1918

Routledge, Fred A., 1873-1936

Ship Wreaks Near Columbia River

1938

Columbia River Entrance, Cape Disappointment.

1946

Bascom

Leadbetter Point and Willapa Bay entrance.

1946

Bascom

Mouth of Columbia River.

1814

Lewis, Meriwether

Columbia River Entrance, the Wrecks and a Marine History of its Development.

1936

McBean, K.

Mouth of Columbia River.

1815

Lewis, Meriwether

Columbia River Entrance to Harrington Point. U.S.C. & G.S. 6151

1945

United States Department of Commerce.

1:40k

Navigation Chart For the Columbia River, Sheet No. 2

1871

C&GS

1:40k