The National Trust for Historic Preservation (NTHP) is a privately funded, nonprofit organization based in Washington, D.C., that works in the field of historic preservation in the United States. The member-supported organization was founded in 1949 by congressional charter to support the preservation of America’s diverse historic buildings, neighborhoods, and heritage through its programs, resources, and advocacy. The National Trust for Historic Preservation aims to empower local preservationists by providing leadership to save and revitalize Americas historic places, and by working on both national policies as well as local preservation campaigns through its network of field offices and preservation partners, including the National Park Service, State Historic Preservation Offices, and local preservation groups. The National Trust is headquartered in Washington, D.C., with field offices in Boston, New York City, Charleston, Nashville, Chicago, Houston, Denver, Boise, Los Angeles, San Francisco, Canby (near Portland, Oregon), and Seattle. The organization is governed by a board of trustees and led by current president, Stephanie K. Meeks. The National Trust presently has around 750,000 members and supporters.