Challenger HMS

converted for World Scientific Cruise, a basis for modern oceanography;
letters by Joseph Matkin;
"At sea with the Scientifics: the challenger letters of Joseph Matkin", edited by Phillip F. Rehbock, (U of hawaii P, Honolulu, 1992). matkin was a ship's steward;
"The challenger Expedition, 1872 - 1876: a visual index", by Eileen V. Brunton, (London: Natural History Museum, 1994);