Strat[igraphic] formations in petrol[eum] geol[ogy] for Dr. Moore pages 49-60 of Stratigraphic Code (annotated), Box: 14, Folder: 26. Personal papers of Raymond C. Moore, PP 3. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/168096 Accessed November 25, 2024.