A scarce chart of the American West Coast

A detailed 'blue-back' sea chart of the West Coast of America, showing from San Francisco Harbour north past Oregan and Washington to Graham Island in British Columbia and the Alaskan border. Ther 17 inset details include Nootka Sound, Puget Sound and Fuca Straight. There is no sign of 'Granville', the township that was incorporated as the City of Vancouver only three years after the chart was published.