South Texas cattle rancher Enrique E. Guerra, known for having one of the country's greatest collections of Spanish and Mexican colonial art and artifacts, also has loaned objects to the museum, including a 16th century viceroy saddle and a dress sword that belonged to Santa Anna. Guerra's son, José “Che” Guerra, owner of Nuevo Santander Gallery in McAllen and a member of the museum's board, also has lent objects.