U.S. Navy Aviation Chart : Provisional Chart1932.eng2nd edition.Verso: inset maps showing airports, airfields, and seaplane anchorages."No. V-423: Seattle, Wash. - Alert Bay, B.C. ; Printed Sept. 1932"."No. V-424: Alert Bay, B.C. - Ketchikan, Alaska ; Printed November 1932"."No. V-425: Ketchikan, Alaska - Skagway, Alaska ; Printed Feb. 1931".