Monday - Friday 8:00 am - 4:30 pm, Central Time, USA
The library is closed on the following U.S. holidays: New Year's Day, Martin Luther King Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Day after Thanksgiving, Christmas week (dates vary).
A librarian is generally available to answer your questions Monday through Friday 8:00 am - 12:00 noon and 1:00 pm - 4:30 pm, Central Time (USA).
(Except 8:30 to 9:30 on Wednesday)