Subseries consists of material collected by Kent Sedgwick for research regarding the communities along the East Line of the Grand Trunk Pacific Railway in Central British Columbia, particularly between Prince George and McBride. These communities and locations include, among others, Shelley, Willow River, Sinclair Mills, Longworth, Dunster, Tete Jaune, Valemount, Mount Robson, and the Yellowhead Pass. Research on these communities was conducted during Kent Sedgwick's involvement in the UNBC-led Upper Fraser Historical Geography Project. The files primarily consist of research notes, audio and transcripts of oral interviews, and photographs of the East Line communities.