The materials in this series document Villarreal’s creative process and output as a writer. The records include drafts; original research materials and notes; outlines; page and galley proofs; and typescripts of Villarreal's books. Several of the drafts contain editorial markings. There are also articles, essays, and poetry written by Villarreal, some of which were published in anthologies, magazines, and newspapers. Also included is an early manuscript and precursor to the bookPocho, entitled Our Little Life.

This series is arranged alphabetically by title. The writings exist in multiple drafts, and the physical arrangement does not necessarily reflect the order of composition. Boxes 6 and 7 consist of unbound drafts in no discernible order.

Note: Come Ride with Me was renamed The Conscripts. Heraclio and My Kinsman, My Foe are earlier titles for The Fifth Horseman.