Heylyn, Peter, 1703 - "Cosmology in Four Books...", London, 1703, Box: 2A, Folder: 41. 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/234345 Accessed June 20, 2025.