The collection contains manuscripts and notes of Harrity's books, plays, and articles as well as related correspondence. There are also original copies of the magazines carrying some of his articles. A large portion of the collection consists of photographs collected by Harrity for use in his books and articles, which were heavily pictorial. Prominent topics represented include prohibition, gangsters and assassins, Berlin and Germany (especially during WWII), presidents and political parties, and a variety of images representing the 20th century up to 1965. A manuscript and photographs of his youth in a family vaudeville act (The World Famous Harrity Family) are also present. The collection also contains unpublished plays and books created by Harrity, as well as audio tapes of readings from the author's works.