The Main Strait from Cape Virgins to Cape Pillar from surveys by Captain Richard C. Mayne, C.B. and Officers of H.M.S Nassau, 1867-8. Captain J.F.L.P. Maclear, and Officers of H.M.S. ALert, 1880. And Captain W.J.L. Wharton and Officers of H.M.S. Sylvia 1882-4. The remainder by Captain P.P. King, H.M.S. Adventure and Commanders Pringle Stokes & Robert Fitz-Roy en Officers of H.M.S. Beagle 1826-30.
Compiled from Surveys by Captain P.P. King, Commander P. Stokes and the Officers H.M.S. Adventure & Beagle, 1828-30; Captain R.C. Mayne, C.B. and the Officers of H.M.S. Nassau, 1868-9; Lientenant S.T.S. Lecky R.N.R. 1872-4; Captains sir George Nares, K.C.B. and J.P. Maclear and the Officers of H.M.S. Alert, 1879, and from an Imperial German Government Survey 1883-4.
The Archipielago of Queen Adelaide is from a Sketch Survey published by the Chilean Government, 1895.