Charles Raine Pettyjohn (November 11, 1896-March 25, 1982) was born in Lynchburg, Virginia. The collection contains bound volumes of lecture notes and lab notes for courses in engineering and physics at Cornell dating 1914-1918 and other items documenting life at Cornell and Phi Delta Theta.

Handwritten copy of a notebook kept by Charles T. Porter in the Department of Heat-Power Engineering, Sibley School of Mechanical Engineering; contains tables, formulas, and notes.

Student notebooks from courses in electrical engineering, mechanical engineering, naval architecture, and physics. Also correspondence, catalogs, drawings, and other records of the Cambria Steel Company.

Six volumes of lecture notes, problems, and lab reports relating to the mechanical and electrical engineering course work of Jacob Moses Fried at Cornell University.

Correspondence, reprints, photograph album from Brown University, Class of 1859 and diplomas. The correspondence concerns experiments, inventions, engineering and scientific problems, scientific machinery and instruments.

Notebooks documenting the typical steam-intensive curriculum based on "hands-on" experience with the then current machinery. The written work and draughtsmanship tell much about the standards at Cornell for the period.

Volume of laboratory notes, charts, and photographs. Scrapbook and loose memorabilia documenting his student experience at Cornell University. Includes loose clippings, photographs, programs, and other items.