Portal to Texas History Portal to Texas History a gateway to Texas history materials for educators, lifelong learners, and researchers. It includes collections from museums, archives, historical societies, and libraries throughout the state of Texas. It is maintained by the University of North Texas Libraries' Digital Projects Unit. The Portal continues to grow as additional partners contribute digital versions of their collections. We hope you'll return often to discover our latest additions. By 2010, the Portal hosted over 900,000 digital images. Dates of Coverage: pre-1519 - current