Vancouver Island and adjacent shores of British Columbia / surveyed by G.H. Richards, assisted by R.C. Mayne ... [et al.], 1859-65 ; compiled and drawn for engraving by E.J. Powell ; engraved by Davies & Powell.Great Britain. Hydrographic Office[1871]"Juan de Fuca Strait from Capt. Henry Kellett's survey of 1847. Shores of Washington Territory from the United States Coast Survey."At head of title: North America, west coast.Includes 6 coastal views.Relief shown by hachures and spot heights. Depths scartographic