Contains annual files, assessments, bibliographies, planners, letters, conferences and symposium papers, and the unpublished writings of Gillum. Most of the material concerns Gillum's professional responsibilities as Ancient Studies Librarian at Brigham Young University, dating from 1970-2014.

Includes published bibliographies, book reviews, and articles. Most publications concern libraries or issues surrounding Mormonism. Includes drafts, notes, and correspondence concerning Gillum's book "Of All Things." This series dates from 1976 to 2007.

Contains bibliographies, articles, event programs, indexes, and notes concerning Hugh Nibley and the presentation of Gillum's research on Nibley. Correspondence and articles written by Hugh Nibley are also included. The papers date from 1926 to 2009.