Correspondence, unpublished writings, subject files, and files on conferences and conventions, from Geballe's career as a physics teacher and chairman of Physics Department. Includes material relating to American Association of Physics Teachers, University of Washington Chapter of American Association of University Professors, American Council on Education, American Institute of Physics, American Physicists Association, American Physical Society, Commission on College Physics, Committee on Physics Faculties in Colleges, National Acadamy of Sciences, National Science Foundation, Pacific Northwest Association for College Physics, U.S. Army Ordnance Research Office, and U.S. Atomic Energy Commission. Correspondents include William P. Allis, Robert A. Becker, David S. Burch, John D. Craggs, Frederick H. Fisher, Leon H. Fisher, Theodore H. Geballe, Leonard B. Loeb, William H. Moore, Bell Telephone Laboratories, Brookhaven National Laboratory, Upton, N.Y., University of California (Berkeley) Physics Department, and Westinghouse Electric Corporation.