Penelope Steel's Map of the Indian Ocean -- Used in an American Circumnavigation in the 1840s.
Rare four-sheet blueback sea chart of the Indian and Pacific Oceans, focusing on the trading routes from the east coast of Africa to Canton and New Zealand, published by J.W. Norie, the successor to Penelope Steel.
We note that the National Library of Australia holds an edition of 1813 and also the upper half of the 1844 edition, but no other institutional copies have been located.
Includes an early label of "Town" at Singapore.