The illustration presented here is a detail from a lithographed nineteenth-century facsimile of a French manuscript map. The title of the original is Carte du Lac Champlain depuis le fort Chambly jusquáu fort St. Frederick Levée par le Sr Anger arpenteur du Roy en 1732 fait à Quebec le 10 Octobere 1748 Signé de Lery (Albany: Pease, [ca. 1849]). The facsimile was published in the Documentary History of the State of New York, I, facing p. 358. The complete map is available on the Internet from Stony Brook University (http://www.sunysb.edu/libmap/Lery.htm).