During the academic year, the Center for Mennonite Brethren Studies is open 8:00 a.m. - 12:00 noon and 1:00 p.m. - 5:00 p.m., Monday - Friday. Summer hours are 10:00 a.m. -12:00 noon and 1:00 p.m. - 5:00 p.m., Monday - Friday. It is closed on all national holidays. Regular hours may be restricted during parts of the Christmas and summer breaks. Call ahead (559-453-2225) for information on hours during those times.

Given the limited size of the center's staff, there are times when professional reference assistance may not be available even though the center is open. Researchers who expect to need significant reference assistance should contact the center by phone at 559-453-2225 or email to ensure that such assistance will be available.