Umpqua River entrance.

1946

Bascom

Entrance To Umquah River, Oregon

1854

U.S. Coast Survey

1:20k

Umpqua River. Winchester Bay.

1946

Bascom

Landforms of the Umpqua South Area, the Oregon Dunes National Recreation Area, Oregon.

1980

Richmond, Bruce M.

Landforms of the Umpqua South Area, the Oregon Dunes National Recreation Area, Oregon - Continued.

1980

Richmond, Bruce M.

Umpquah River Entrance

1854

Unknown

1:20k

Eolian Activity. Coastal Dunes-Transverse. Reedsport, Ore.

1966

O'Brien, Emmett J

1:63k

History of the Pacific States of North America

1882

Bancroft, Hubert Howe.

A Diagram of a Portion of Oregon Territory

1851

U.S. General Land Office

Map of Oregon Territory West of Cascade Mountains

1855

U.S. General Land Office

1:1m