Halpin, Marjorie, and Margaret Seguin (1990) "Tsimshian Peoples: Southern Tsimshian, Coast Tsimshian, Nishga, and Gitksan." In Handbook of North American Indians, Volume 7: Northwest Coast, ed.
His first book, A Death Feast in Dimlahamid (1990), dealt with the struggles of the Gitksan and Wet'suwet'en peoples, drawing on an account of the oral traditions of Dimlahamid, also known as Temlaham, an ancient city said to have existed in that region.