This series includes materials related to non-IGBO bowling tournaments as well as supporting papers. Materials are comprised of correspondence, newspaper clippings, printed materials, photographs, VHS, cassette tape, CDs, realia, and ephemera. This series is arranged alphabetically by tournament name then chronologically with more generic materials including tournament brochures, winner lists, participant lists, and entries as compiled by Gerald Hagan (IGBO archivist) at the end of the series arranged chronologically.

Of note are the materials related to The Stonewall Tournament, 1980 Holiday Invitational Tournament (HIT), and Gay World Series, which helped to spur the creation of IGBO. Box 17, Folder 1 contains photos of the original founders.

Some of the tournament materials in this series correspond to materials in Series II: IGBO tournaments as some tournaments are affiliated, but not official IGBO tournaments. Articles in Box 20, Folder 7 contain articles about IGBO.