Kenneth Spencer Research Library Archival Collections
Part of the University of Kansas. Kenneth Spencer Research Library Repository
SOC-15 Pittsburgh Geological Society, Box: 66, Folder: 7. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library.
SOC-15 Pittsburgh Geological Society, Box: 66, Folder: 7. Hollis Hedberg papers, RH MS 546. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/150932 Accessed December 24, 2025.
