[Pownall's map of North America and the West Indies].Pownall, Thomas, 1722-1805between 1783 and 1799?]An issue of the Pownall map of North America and the West Indies; appears similar to the 1783 and 1794 editions.Insets: A particular map of Baffin and Hudson's Bay -- The passage by land to California.Prime meridians: London and Ferro.Relief shown pictcartographic