 Especially noteworthy in the archaeological collections at Gilcrease Museum are items from the Mississippi valley region (present-day Illinois and Arkansas), the southwestern U.S. (Colorado, New Mexico, and Arizona), and ancient Mexico.Gilcrease Museum has one of the most important collections of pre-Columbian projectile points (arrow and spear heads) in North America, and has become a resource that is regularly consulted by archaeologists.The museum also has a research facility containing sliding glass display shelves for artifacts and a computer database system to help find various pieces.