if you want to go to the best source if you want to learn about Texas state government history, you should head over to the state house archives, option D.
In it there is a extensive archive of preserved and documented shared heritage and culture of Texas. It is the official archival of the Texas state government history. From historical treasures such as the first Texas constitution to digital records. They have over 200 million pages of archival documents and more than two million volumes of printed library material.