Circular letter from Dr. Ott on his declining eyesight and installation of the “Talking Book Machine” in his library. He requested letters from friends, undated, 6/1945, Box: 6, Folder: 15. Cayuga Lodge papers, 37-4-824. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/68790 Accessed April 10, 2026.