Barker, W. (William), active 1795-1803, and Mathew Carey. "A map of the countries situate about the North Pole as far as the 50th. degree of north latitude." Map. Philadelphia: Mathew Carey, [1800]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:3f463030g (accessed April 19, 2024).