Location & Hours of Operation: The Business and Media Archives of the Mahoning Valley collection is located in the IBM Building, 250 Federal Plaza East, Youngstown, Ohio, 44503. (See map below) Hours of operation are Monday-Friday, 8:30 A.M. to 4:30 P.M., Eastern Standard Time. Telephone: 330-744-7621 Fax: 330-743-7210 Email: business_media@mahoninghistory.org