Spiller, Mortimer Spiro, Harry Spivack, S. S. Spook Farm Gallery Sprague, Mrs. Frank J. Spreckles, Mrs. Adolph Spreter, R. S. Sprinchorn, Carl Springfield Art Museum (Mo.) Springfield Museum of Fine Arts (Mass.) Springold, N. B. Springville High School Art Association
The papers document the professional career of mechanical engineer, Charles Richardson Pratt. The papers include correspondence, patents, patent application materials, agreements, photographs, publications, and blueprints for many of Pratt's inventions, especially his work on elevators.