A chart of the Magdalen Islands in the Gulf of St. Laurence surveyed in 1765
Printed map. Cartographer uncertain, probably Laurie & Whittle. Visual scale. Fourth state. In lower right margin, "T. Jefferys Sculp." In upper right margin, "XII". Described in Kershaw, Early Printed Maps of Canada, volume II, entry 607, p. 232: "Published in: source not located... The Laurie & Whittle imprint has been deleted but 'T Jefferys Sculp.', and top right 'XII', are retained."