The Pennsylvania State Library is one of the largest libraries with information related to everything available at the state library of Pennsylvania. The Library Reading Rooms are open on Tuesday, Wednesday, Thursday from 9:30am to 5:00pm, and the 2nd Saturday of each month from 9:30 a.m. to 4:30 p.m. The Pennsylvania State Library’s offices are open from 8 a.m. to 5 p.m. Monday through Friday except for state holidays.