PennDOT Library & Research Center Overview The PennDOT Library & Research Center maintains over 17,000 books and 1200 multimedia packages, as well as routing more than 250 magazines and journals. Resources are available to employees, partners and other government agencies. Personalized reference services are provided on a one-on-one basis to meet PennDOT informational needs. The general public may use Library materials by appointment onsite. Contact Us Inquiries: Contact Librarian   Location: PennDOT, Keystone Building 400 North Street, 6th Floor Harrisburg PA   Mail: PennDOT Library & Research Center P.O. Box 3054 Harrisburg PA 17105-3054   Inter-Office Mail/Returns: PennDOT Library & Research Center Keystone Building, 6th Floor Library Staff