Original proofs and photos for article "Oil and Gas of Louisiana" by G.D. Harris, U.S. Geological Survey Bulletin #429, 1910, Box: 6, Folder: 19. Gilbert Harris papers, 14-5-4663. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1932741 Accessed August 29, 2026.