This file contains correspondences from Bruce Rigsby to Wilson Duff. Rigsby summarises his meetings with a number of Gitxsan, Nisga'a, and Tsimshian individuals, including the recording of information about houses of specific kinship lineages (or clans) and other oral histories. Rigsby also includes a proposed orthography for Nisga'a and Gitxsan, a copy of his article "A note on Gitksan speech-play", and a copy of a conference paper "An early nineteenth century prophet among the Gitksan". Records in this file refer to the Nisga'a people as Nass.