The Texas Heritage Digitization Initiative (THDI) is a statewide cooperative effort to digitize historical Texas documents and images, which are placed on their web site Texas Heritage Online. Included in this collection is Orville Dewey's 1844 document Discourse on Slavery and the Annexation of Texas, an oral history of George Orzuna, Jr. with both a transcript and the audio available, and a picture of Colonel Castro with Corranzisla's forces at Ojinaga.
The University of North Texas has been digitizing its collection of historic artifacts and placing them in their Portal of Texas History. They have also begun receiving grants to help other institutions digitize collections. UNT is a key player in the THDI.