General chart of the Atlantic Ocean according to the observations, surveys and determinations of the most eminent navigators British and Foreign from a combination of which the whole has been deduced by John Purdy. London published by Richard H. Laurie Chart seller to the Admiralty &c &c No 53 Fleet Street Sept 1st 1821

Scale: circa 1:2,000,000. Printed chart of the Central Atlantic. Blue back chart. With four insets and two coastal elevations. Manuscript track (of Beagle?) 1832. Badly damaged, in two halves Insets: 1. Channel between Fayal and Pico 1:150,000; 2. The Road of Angra 1:150,000; 3. The Road of Ponta Delgada, St. Michael's 1:60,000; 4. Madeira 1:500,000