This collection consists of various materials produced by the National Fantasy Fan Federation (N3F) through much of its existence and assembled by Mike Horvat. Materials include administrative materials such as membership rosters, records relating to N3F bodies such as the Collector's Bureau and the Tape Bureau, and assorted fannish informational items produced by the N3F.

Most of the collection consists of N3F publications, particularly the club's organizational organ "National Fantasy Fan" and the letterzine "Tightbeam". The club also produces an apazine, entitled the "Alliance Amateur", issues of which are housed in the M. Horvat Collection of Genre Apazines (msc0825).