The answer is d. All of these materials are hosted on the UNT Libraries' Portal to Texas History, which features more than 25,000 digital images.
The portal offers a digital gateway to the collections of Texas libraries, museums, archives and historical societies.
Notable collections accessible through the portal include:
• The Dallas Historical Society's J.L. Patton Collection. This online collection presents images from the materials collected by legendary African American Dallas educator J.L. Patton. Patton began working in the Dallas Independent School District in 1926 as a teacher at J.P. Starks Elementary and was principal of Booker T. Washington High School from 1939 to 1969.
• Photos from the UNT Archives. The photos spotlight early images of North Texas State Normal College (now UNT), faculty and students.
• From Republic to State: Debates and Documents Relating to the Annexation of Texas, 1836-1856. The collection features books, maps, letters and manuscripts.