Perks, William, 1793 - "Youth's General Introduction to Geography...", London, 1793, Box: 2, Folder: 141. Research papers gathered for A Carto-Bibliography of the Maps in Eighteenth-Century English and American Geography Books, MS 287. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/234188 Accessed February 17, 2025.