Abstract The Age of Empires collection contains two sketchbooks with loose drawings inserted, as well as digital artwork used in the development of Ensemble Studios’ Age of Empires. The original materials are undated but are likely from 1996-1997.

Abstract The Guy Welch collection is a compilation of materials featuring two notable American video game companies: Sierra On-Line and Microsoft. Items in this collection include correspondence, sketches, animation cels, artwork, published advertisements, magazines, corporate records, concept design documents, and more. The bulk of the materials are from between 1990 and 1998.