Barton Warnock, a leading botanist of the 1900s and professor at Sul Ross State University, devoted his career to studying the unique flora of the Trans-Pecos region. His namesake visitor center in Big Bend Ranch State Park houses a library of pressed plant specimens collected by Warnock and his students. The collection, assembled over multiple decades, is an invaluable tool for studying various plant species and how the environment changes over time.