They Quipped, Saying that my Rhapsodic Petrology Professor "has Rocks in His Head"! Now Those Rocks are in My Head!, October 2011

They Quipped, Saying that my Rhapsodic Petrology Professor "has Rocks in His Head"! Now Those Rocks are in My Head!, October 2011, Box: 14, Folder: 6. George Charles Poppensiek papers, 24-2-2149. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/158440 Accessed December 24, 2025.