(Reflections on) "On the Art of Oilfinding" A lecture before the Roswell Geological Society - by W.E. Pratt, 1965, Box: 5, Folder: 13. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/34087 Accessed May 19, 2024.