Collection search - Plan of part of Squamish Valley [showing encroachment of river on Seaichem Reserve/montrant l'empiétement de la rivière sur la réserve Seaichem]...re Dr. Bell-Irvings letter. North Vancouver Dist., Vancouver, B.C., May 23, 1918. Dept. Public Works, E. Dundas Todd, Asst. Engr. [2 copies/2 exemplaires]