Facsimile: Portland Canal - Admiralty Survey.

1868

British Admiralty

1:206k

Alaskan Boundary Sheet #4

1903

Julius Bien & Co.

1:160k

Sheet No. 4. (Portland Canal, Behm Canal).

1904

Alaskan Boundary Tribunal

1:160k

Portland Canal and Observatory Inlet

1880

British Authorities

1:523k

International Boundary Region Between Portland Canal and Stikine River Alaska British Columbia

1920

International Boundary Commission

1:250k

Facsimile: Russian Map of Southern Half of the Koloshenski Archipelago.

1853

Hydrographic Department, Ministry of Marine

1:510k

Clarence Strait Revillagigedo Channel and Portland Canal

1893

C&GS

1:200k

Sheet No. 7. (Unuk River).

1904

Alaskan Boundary Tribunal

1:160k

Clarence Strait : Revillagigedo Channel and Portland Canal

1894

1:200k

Facsimile: Cordova Bay to Cross Sound. Part of British Admiralty Chart. No. 2431.

1884

British Admiralty

1:530k