MASON NECK, Va.?EUR??,,????'??+A symposium entitled ?EUR??,,????'??Mission Impossible: Can Historic Properties Embrace a Landscape Continuum??EUR??,,????'?? looking at the stewardship dilemma involved in the preservation of historic properties. The symposium will be held Friday July 11, with an optional field trip on July 12. Speakers Charles A. Birnbaum, C. Allan Brown, Richard Longstreh, Leni Preston, Pamela Seager and Judith Tankard, will consider where and when historic properties can broaden their period of significance and interpretative agenda to ensure the preservation and ongoing management of important later landscape features and where this might be difficult or untenable. These speakers will present a variety of historic properties spanning America from the plantations of Virginia to a rare surviving California ranch in the industrial city of Long Beach. Ann optional field trip will take place with a visit to Fredericksburg, Va. Tour sites include Chatham, a mansion built in 1771, George Washington?EUR??,,????'???s Ferry Farm, and Kenmore, built in the 1770s. The symposium is co-sponsored by the Cultural Landscape Foundation, Gunston Hall Plantation and the National Park Service Historic Landscape Initiative. For more information visit www.gunstonhall.org.