Reliving the adventures of past explorers. Trail to the Interior is R. M. Patterson's rich account of exploration and personal adventure in the Cassiar district of British Columbia. The trail is the historic track from Wrangell, Alaska, along the Stikine and Dease rivers and across the height of the land into the valleys of the Liard and the Mackenzie. Explorers and traders of the Hudson's Bay Company and the Russian American Company had ventured this river route, and Raymond Patterson followed in their footsteps.