National Park Service, Office of Public Inquiries, Washington, DC 20013-7127. Write for maps and guides to national historic sites.
National Register of Historic Places, Interagency Resources Division, National Park Service, P.O. Box 37127, Washington, DC 20013-7127. The Register's archives contain information on 59,000 places of national, state, and local significance.
National Council for History Education, 26915 Westwood Rd., Suite B-2, Westlake, Ohio 44145. Write to the council for the monthly newsletter, History Matters! The council also maintains a Speakers' Bureau.
National History Day, University of Maryland at College Park, 0121 Caroline Hall, College Park, MD 20742. Write for information on local, regional, state, and national contests for middle schoolers.
National Trust for Historic Preservation, 1785 Massachusetts Ave. NW, Washington, DC 20036. Write to them for lists of preservation groups in local communities throughout the United States. These groups often have walking maps and special historical programs.