Only a few Mythcon proceedings have been published; after Mythcon III, presenters were encouraged to submit their papers to Mythlore instead. The Mythcon XXIX C.S. Lewis/Owen Barfield Souvenir Book is a special case—it is not technically a proceedings, but nevertheless includes some important material. The Proceedings for Mythcon XVI was never formally printed but is simply a mimeographed collection of papers with an overall pagination that exists in a few scattered copies. All but six of the items collected were later reprinted in Mythlore. Copies are known to be held at Hope College, the Wade Center at Wheaton College, and the special collections at Marquette University.