Harry J. Hansen, manuscript. "The Waste Gate Formation, a new Subsurface Unit of the Potomac Group Underlying the Delmarva Peninsula" for AAPG Bulletin, September 6, 1983, Box: 48, Folder: 22. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/150463 Accessed November 24, 2024.