NBC television broadcasts are held by the National Audio-Visual Conservation Center at the Library of Congress. It also has non-television materials that aid in researching NBC television broadcasts. These materials and the television broadcasts are available for research in the Moving Image Research Center.
Learn about research conducted by the Radio Corporation of America (RCA) that led to the development of television, as well as NBC's involvement in the early days of television broadcasting, in this short film from 1956. This film is available online in the “National Screening Room” digital collection.