Founded in 1947, the George Eastman Museum is the world's oldest photography museum and one of the largest film archives in the United States, located on the historic Rochester estate of entrepreneur and philanthropist George Eastman, the pioneer of popular photography. Its holdings comprise more than 450,000 photographs; 28,000 motion picture films; the world's preeminent collection of photographic and cinematographic technology; one of the leading libraries of books related to photography and cinema; and extensive holdings of documents and other objects related to George Eastman. As a research and teaching institution, the Eastman Museum has an active publishing program and makes critical contributions in the fields of film preservation and photographic conservation.