Correspondence, biographical material, clippings, photographs, notes, diagrams, publications, glass slides and other items pertaining to the Cornell University Department of Physics, primarily from the 1880s through the 1950s, along with some later memoirs and histories of the Department and those associated with it.

Correspondence, primarily of Edward L. Nichols, Ernest Merritt, and Frederick Bedell, with contributors, subscribers, and advertisers. Receipt and order books, and photographs. Also, printing block from the first issue of the Physical Review, mounted on a plaque, from the office of Cornell President Emeritus Dale R. Corson. Also, printing blocks from issues of the Physical Review from 1911, 1932.