"On the Art of Oilfinding" a talk before the "Potash Section", AIME, in Carlsbad, New Mexico, by W.E. Pratt, 1956, Box: 5, Folder: 12. Wallace E. Pratt papers, RH MS 870. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/34086 Accessed May 19, 2024.