The Albert Dalton Doerge Collection of local Native American lithic, shell, bone, and pottery objects, a Texas State Archeological Landmark. Collected within a 35-mile radius of the twin cities between 1902-1952, these 4,700 artifacts date from recent times back to the origins of human habitation of the area c. 9500 BC.

The State Historical Commission designation made the Doerge Collection the fifth archaeological collection to receive extensive legal protection at a state level.