Robert R. Keller photos, from nitrate negative --Castle Rock, Pineville, West Virginia (photo prints, photocopies of rock formation and Dr. Early, Harry Stewart), ca. 1915, Box: 10, Folder: 11. Long/Trail Southeastern West Virginia Historical Records, A&M.3762. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/33438 Accessed May 18, 2021.