Georeferenced hydrographic chart of the Strait of Juan de Fuca and the channels between Vancouver Island and the continent, marking the boundaries proposed by the British and US Governments respectively. Added note transcribed below, signed, Geo. Henry Richards. 2 sea miles to one inch. [Juan de Fuca, Strait, c. 1873].
From the Admiralty Surveys by Captains H. Kellett, R.N., 1847 & G.H. Richards, R.N., 1858-62. At head of title: North America, west coast. Drawn by Edward J. Powell of the Hydrographic Office. Malby & Sons, Lith. Depths shown by soundings in fathoms. Relief shown by hachures and spot heights. Shows detailed topography and bathymetry of the Straits of Juan de Fuca and waters between Straits of Georgia and Admiralty Inlet.