Great Britain, Admiralty Hydrographic Office., Potter, J. D. (John Dennett), active 1830-1892, and Radclyffe, Edward, 1810-1863. View drawn by Mr. G.F. McDougall Mast. R.N. ; Engraved by E. Radclyffe ; Engraved by J. & C. Walker ; Sold by J.D. Potter Agent for the Admiralty C... Hydrographic Office of the Admiralty,.