1. Chart of the Antarctic continent : shewing the icy barrier attached to it, discovered by the U.S. Ex. Ex., Charles Wilkes, Esq., Commander, 1840 Yale Public content 1874. 2011-01-05T20:49:41Z. 2021-01-08T21:33:08Z. Wilkes, Charles, 1798-1877, cartographer. Hydrographic Office. English. cartographic image. Public. Antarctica.