1992 ASLA Historic Landscape Preservation Symposium notebook Monday, Nov. 9, 1992, Grand Hyatt Hotel, Washington, D.C. provided by the American Society of Landscape Architects Open Committee on Historic Landscape Preservation ; prepared by the National Park Service, Preservation Assistance Division
Secretary of the Interior's standard, for the treatment of historic properties 1992; Guidelines for identifying, evaluating, and registering America's historic battlefields; Draft guidelines for the treatment of historic landscapes, in pockets