Newspaper clipping, "Air mail service to Alaska urged," from the Seattle Sunday Times, March 9, 1919. Discusses a possible air mail route between Seattle, Washington and Alaska. Includes a photograph of the Boeing CL-4S aircraft and a photograph of…
Newspaper clipping, "City sends first mail to Seattle by aeroplane," from the Vancouver Daily Star, March 4, 1919. Reports on the first international mail flight from Seattle, Washington to Vancouver, B.C. Includes photographs of E. S. Knowlton,…