Monday thru Friday, from 8:00 am to 4:30 pm, Central Time (USA)
Closed weekends and all major U.S. holidays.
A librarian is generally available to answer your questions
Mon, Tue, Thu, Fri: 8:00 am - 12:00 noon and 12:30 pm - 4:30 pm, CST
Wed: 9:15 am - 12:00 noon and 12:30 pm - 4:30 pm, CST