The museum and administration building are open from 8:30 a. m. to 5 p. m. during the week, and on Sundays from 9 a. m. to 5:30 p. m. A fee of 25 cents covers admission to the museum and earthlodge but is waived for children under 12, organized educational groups, and members of the U. S. Armed Forces in recreational or educational groups sponsored by military centers, the USO, or like organizations. The exhibits are simply and clearly explained so that the services of a guide are unnecessary, but every attention is given to the particular needs of organizations and special groups when arrangements are made in advance with the superintendent. Free literature and other publications are available. Interested students are welcome to the use of the library, access to the collections, and the assistance of an archeologist. The visiting hours of the museum do not apply to the monument area, which is open at all times.