Map of Alaska and the Yukon : Candian Rockies and the triangle tour of British Columbia / Canadian National, largest railway system in America.Canadian National Railways[1930?]Date derived from history of national parks.Includes ill., text, and ancillary map - "Routes of Canadian National Steamships, Pacific Coast Service"Relief shown by shading and by spot heights.Text and ancillary map - "Canadian National Railways, Grandcartographic