Great Britain. Hydrographic Dept. Australia, Coral Sea and Great Barrier Reefs shewing the inner and outer routes to Torres Strait. Sheet 2 [cartographic material] : from the surveys of Captains Blackwood, Owen Stanley, and Yule, R.N., 1842-50 : the outer detached reef's from Captains Flinders and Denham, Royal Navy, 1802-60 1860. MAP British Admiralty Special Map Col./5. More information