National Register of Historic Places
National Park Service
1201 Eye St., NW 8th Floor (MS 2280)
Washington, DC 20005
202-354-2213
National Trust for Historic Preservation
(Midwest Office)
52 West Jackson Blvd., Suite 350
Chicago, IL 60604
312-939-5547
Ohio Historic Preservation Office
567 E. Hudson St.
Columbus, Ohio 43211-1030
614-298-2000
Directory of Historical Societies & Preservation Organizations
This directory lists over 1300 online preservation organizations
OTHER HELPFUL LINKS