Photographs, both loose and in five albums, include views of Crawford Greenewalt attending meetings, luncheons, dinners, and dedications, giving speeches, receiving honorary degrees and awards, attending the New York World's Fair of 1965, and visiting various DuPont Company plants. Includes a full album documenting a visit Greenewalt made to the Seaford Nylon Plant for a broadcast of Cavalcade of America, May 27, 1952. Another album consists of photographs of Greenewalt's visit to the Parlin Plant, May 4, 1950. A third album documents the Board of Directors trip to London for a DuPont Company Board Meeting in September of 1984. There are also views of the construction of the DuPont telescope of Las Campanas Observatory, 1972.