The collection has been arranged in two series: General Files and Broadcasting Files.
The GENERAL FILES consist of clippings, correspondence, miscellany, reference material, speeches, and articles. A folder of correspondence contains a letter from Eleanor Roosevelt expressing her ideas about the future of music during wartime, and another from President Harry S Truman accepting Hayes' invitation to attend a concert by “a charming, lovely, and talented young American soprano, Miss Margaret Truman.” A partial index to the correspondents includes:
| Rudolph Bing |
2 May 1959 |
| Hubert Humphrey |
26 May 1966 |
| |
19 November 1969 |
| Eleanor Roosevelt |
17 January 1942 |
| Arthur Schnabel (concert pianist) |
3 March 1948 |
| |
11 March 1948 |
| Harry S Truman |
21 October 1947 |
| |
15 January 1948 |
Among the speeches are Hayes' 1950 presidential report to the members of the National Association of Concert Managers, his remarks at a Women's National Democratic Club meeting, and transcripts of his comments before various Congressional committees. Miscellany includes flyers that announce the 1955 appearance of Emil Gilels, the first Soviet artist to appear in Washington, and a special concert celebrating the tenth anniversary season of Hayes Concert Bureau.
The BROADCASTING FILES make up the majority of the collection and consist of transcripts of Hayes' radio program People and Events in the World of Music, broadcast over WGMS in Washington, D.C. On these programs Hayes commented on musical events in New York and Washington and on international events of cultural significance, such as the Brussels World Fair.
