Vancouver Island & British Columbia. Johnstone Strait, sheet 3 (west) [cartographic material] / surveyed by Commander C.H. Simpson R.N., assisted by Lieutenants E.C. Hardy, F.H. Walter, W.T.P. Wilson, J.R. Lay, J.S. Harris & Mr. G.H. Alexander R.N., H.M. Surveying Ship 'Egeria', 1901

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