The Ken Irwin Collection consists of audio recordings, 1974-1975, of interviews with folk, country, and bluegrass musicians. Ken Irwin, a white co-founder of the record label, Rounder Records, compiled the recordings, which feature such notable artists as Hazel Dickens, Buzz Busby, and Whitey and Hogan, among others. There are also audio interviews, 1995-1996, with Ken Irwin. Other materials document the Rounder Record business and the artists signed to the label and the International Bluegrass Music Association (IBMA) and Folk Alliance governing boards. Materials include correspondence, photographs, business records, catalogs, newspaper clippings, t-shirts, promotional posters and press packs, and other ephemera, as well as additional audiovisual materials related to Rounder Record artists.