Preservation
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- Goodsprings Historical Society
- Aims to preserve the historical and natural resources of the Goodsprings Township in southern Clark County, Nevada, by educating the public about its environment, archeology and history.
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- Grand Canyon Historical Society
- A non-profit corporation for the study and preservation of historical sites, photographs and artifacts of Grand Canyon and surrounding areas; and restoration of sites and buildings at Grand Canyon National Park.
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- Hartford Preservation Alliance
- Nonprofit organization that promotes, preserves and protects historical architecture in Hartford, Connecticut.
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- Heritage Homes of Petaluma
- Works to preserve the unique architectural heritage of this Californian town with origins in the mid-19th century. Events, tours, news, how to join.
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- Historic Fredericksburg Foundation
- Aims to preserve, protect and revitalize the distinctive historic environment of the Fredericksburg area. Aims and activities, events and tours, projects, newsletter and board of directories.
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- Historic New England
- Aims to preserve, interpret and collect buildings, landscapes and objects reflecting New England life from the 17th century to the present. It owns and operates 35 historic properties.
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- Historic Savannah Foundation
- A non-profit organization aiming to preserve the architectural heritage and original plan of this city in Georgia. History, neighborhood guide, events, board of trustees, staff, how to join.
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- Idaho Heritage Trust
- Funded in 1989 by members of the Idaho Centennial Foundation. Gallery of projects throughout the state. Grant application (requires Adobe Acrobat Reader.)
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- Landmarks Preservation Council of Illinois
- Statewide not-for-profit membership organization dedicated to the preservation of Illinois's architectural and historic resources. Membership, events, programs, current issues.
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- Loudoun Restoration and Preservation Society
- LRPS devotes itself to preserving the best of the heritage of Loudoun County, Virginia. Annual August Court Days, historic plaques, grants, projects and membership.
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- Memphis Heritage
- The non-profit historic preservation society for Memphis and Shelby County, Tennessee. Concerns, projects and successes, events, old postcards, preservation listings, roundtable forums.
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- Merritt Parkway Conservancy
- A program of the Connecticut Trust for Historic Preservation which aims to revitalize the Merritt Parkway. Mission, Steering Committee, programs, Merritt Parkway history.
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- Montana Preservation Alliance
- This non-profit all-volunteer organization works to preserve historic resources and places in Montana. Board, workshops, Montana's most endangered historic places.
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- Mosaic Templars Building Preservation Society
- Celebrates Black achievement in Arkansas and seeks to preserve African American history, heritage, organizations and enterprises in Little Rock's downtown business district on Ninth Street and Broadway.
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- National Conference of State Historic Preservation Officers (NCSHPO)
- Professional association of the State government officials who carry out the national historic preservation program. Includes news, preservation issues and meeting information.
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- National Park Service: Preservation
- Explains the preservation work of the service in America’s nearly 400 national parks, including the Historic American Buildings Survey.
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- National Society for the Preservation of Covered Bridges
- This American non-profit society publishes the World Guide to Covered Bridges, a quarterly magazine and a newsletter, excerpts from which are online.
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- New Jersey Lighthouse Society
- A non-profit, educational corporation dedicated to the history and preservation of lighthouses, particularly in the New Jersey, Delaware Bay and New York Harbor areas.