Report Relative to the Subsoil Investigation made at the Proposed Site of the Facility for the Royal Venezolana C.A. near Guacara, Box: 7, Folder: 7. Personal papers of Donald E. Hatch, PP 272. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/451277 Accessed November 23, 2024.