Compact discs. Issued with booklet (56 p. ; ill.) containing program notes, historical commentary, bibliography, and time tables in container (26 x 15 x 4 cm.). Compilation produced by Samuel Brylawski and Cooper C. Graham of the Library of Congress, Motion Picture, Broadcasting, and Recorded Sound Division ; essays by James H. Billington, Samuel Brylawski, Kathleen Hall Jamieson, and Cooper C. Graham.