PROJ-183 15. Petroleum Prospects of Deep Offshore Correspondence with AAPG, after Presentation in Washington, June 1977 - May 25, 1978, Box: 83, Folder: 15. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/151411 Accessed November 24, 2024.