- 107 Tory House
- Aberdeen Room Archives
- Abigail Adams Historical Soc
- Abraham Clark Memorial House
- Abram Demaree Homestead
- Absecon Lighthouse
- Alexander Ramsey House
- Alice Paul Institute
- Allaire Village
- Alumni Hall Cultural
- America's Stonehenge
- Ames Florida Stork House
- Anne Arundel County Society
- Arcadia Area Historical Scty
- Arrow Rock Historic Site
- Arrow Rock Information Ctr
- ASA Biggs House
- Baltimore Heritage Inc
- Banfill Tavern
- Barker House
- Barre Historical Society
- Beall-Dawson House
- Beall-Dawson House
- Beebe Estate
- Belle Plaine Historical Scty
- Bennett Place State Historic
- Bennington Historical Society
- Berkeley Twp Historical Soc
- Bethabara Historic Park
- Beulah Cemetery
- Beverly Historical Society
- Bingham Waggoner Estate
- Blue Rock Histories
- Boonsboro Historical Society
- Boscawen Historical Society
- Bradford House
- Braintree Historical Society
- Brice's Crossroads Visitor Ctr
- Brown County Historical Soc
- C & O Canal Four Locks Ranger
- C A Nothnagle Log House
- Cambridge Historical Society
- Camden County Historical Soc
- Cannon Historical Society
- Carlton Foundation Inc
- Cedar Grove Historical Society
- Central Railroad-Nj Terminal
- Charles A Lindbergh House
- Charlestown Preservation Soc
- Charlotte Hawkins Brown Mmrl
- Chesaning Area Historical
- Chicamacomico Historical Assn
- Chinese Historical Society
- Chipman Foundation
- Chippewa County Historical Soc
- Citizens Committee-Historic
- Claremont Historical Society
- Clark Historical Society
- Col Lowrey Chapter Dar Fleming
- Corinth Interpretive Ctr
- Corrales Historical Society
- Cottonwood Area Historical
- Crosslake Area Historical Soc
- Curlee House
- Dakota County Historical Soc
- Daniels Farmstead Foundation
- Deacon Andrew Hetfield House
- Deacon Transportation
- Dekalb County Historical Scty
- Delta County Historical Scty
- Dewey House
- Dorchester Heights National
- Dorchester Historical Society
- Duke Homestead State Historic
- Duke Homestead State Historic
- Durand Union Station Inc
- East Detroit Historical Scty
- Eastern National
- Eastern National
- Eastern National
- Egg Harbor Historical Society
- Elizabeth II Roanoke Island
- Evansville Historical Fndtn
- Ewing Township Historic
- Fairmount Academy Historical
- Fayette Historic Town Site
- Festival Comm Of Chatsworth
- Fillmore County Historical Ctr
- Fitzwilliam Historical Society
- Fort Defiance
- Fort Dobbs Historic Site
- Fort Lee Historic Park
- Franklin Edwards House
- Frederick County Landmark Fndt
- Frederick Woman's Civic Club
- Fredicksberg Ferry
- Friends Of Pfi At Mt Ida
- Friends Of The Mansion
- Friends Of The Thumb
- Gasconade County Historical
- George Peabody House
- George Washington Carver Libr
- Glen Magna Farms
- Glenn House
- Glensheen-Historic Congdon
- Gov Bellingham-Cary House
- Government House
- Governor's Mansion
- Great Divide Wldlnds Institute
- Griffith Morgan House
- Grover Cleveland Birthplace
- Guadalupe Historic Foundation
- Guadalupe Historic Foundation
- H W Longfellow National Site
- Haddonfield Historical Society
- Hamilton Township Historical
- Hanover Historical Society
- Harding Twp Historical Society
- Harkin Store
- Harmony Hall Visitors Ctr
- Harvey Higgins Historical
- Haywood Hall & Gardens
- Heart Of Virginia
- Heath Farm Exhibit
- Henniker Historical Society
- Hermitage
- Hess Roise & Co
- Higgerson School Historic Site
- Hillside Historical Society
- Hingham Historical Society
- Hip Roof House
- Historic Bath State Historic
- Historic Bostonian Properties
- Historic Depot
- Historic Fort Snelling
- Historic Harrisville Inc
- Historic Medley District Inc
- Historic Preservation
- Historic Preservation Ofc
- Historic Rosedale Foundation
- Historic Rural Hill Farm Ctr
- Historic Salisbury Foundation
- Historic Stagville
- Historic Vance House Assn
- Historical Preservation Scty
- Historical Society
- Historical Society Archives
- Historical Society Queen Anne
- Historical Society-Greenfield
- Historical Society-Moorestown
- Historical Society-Somerset
- Holt County Historical Society
- Hope
- Hope Plantation
- Hopkinton Historical Society
- House-In-The-Horseshoe
- Hubble House Alliance
- Hugh Torrance House & Store
- Hunting Ridge Condominium Assn
- Ice Caves Inc
- Intermountain Restoration Inc
- Ionia County Historical Scty
- Isanti County Historical Scty
- J & H Harper Grocery/Gen Merch
- J F Kennedy Historic Site
- Jackson County Historical Soc
- Jacob Holt House
- Jail Museum-1859
- James J Hill House
- Jamesburg Historical Assn
- Jefcoat Museum
- Jefferson College Historic
- Jefferson Cutter House
- Joel Lane House Inc
- Kaleva Historical Society
- Korner's Folly
- Landmarks Inc
- Lauderdale Springs Cemetery
- Lawnside Historical Society
- Liberty Hall Museum
- Liberty Hall Restoration
- Lincoln County Historical Soc
- Lind House Ass'n
- Little Falls Historical Soc
- Littleton Grist Mill Inc
- Littleton Historical Museum
- Littleton Historical Soc Inc
- Los Alamos Historical Archives
- Lucy The Elephant Gift Shop
- Lynnfield Historical Soc
- Madison County Historical
- Magnolia Cemetery
- Manchester Historical Society
- Maplewood Area Historical Soc
- Maritime Museum
- Market Mills Assoc
- Marlpit Hall Museum
- Marshall County Historical
- Martha Vick House
- Mary Baker Eddy Historic House
- Mary Baker Eddy Historic House
- Mary Baker Eddy Historic House
- Mary Baker Eddy Historical
- Mary Baker Eddy Historical Hse
- Mary L Williams Ctr For Black
- Maryland Historical Society
- Maryland Historical Society
- Mastodon State Historic Site
- Mauricetown Historical Society
- Meadows Foundation
- Mecklenburg Historical Assoc
- Medford Historical Society
- Menare Foundation
- Merrehope
- Merrimack Historical Society
- Middletown Valley Historical
- Milford Historical Society
- Mill City Museum
- Miller House
- Minnesota Historical Society
- Mississippi County Hist Soc
- Missouri Mines State Historic
- Mitchell Co Historical Society
- Monmouth County Historical
- Monmouth County Historical
- Monroe Twp Historical Society
- Monson Historical Society Inc
- Montana Heritage Commission
- Montana Preservation Alliance
- Montgomery County Historic
- Mordecai Historic Park
- Mormon Trail Ctr
- Mount Savage Museum
- Mount Tabor Historical Society
- Mt Auburn Cemetery
- Mt Clare Museum House
- Murfreesboro Historical Assn
- Murray's Mill Historic Site
- Natchez Trace Parkway
- National Huguenot Society
- National Railway Historical
- Naval Air Engineering Station
- Neligh Mills Historical Soc
- Neligh Mills Historical Soc
- New Bern Historical Society
- New London Historical Society
- New Mexico Heritage Alliance
- Newbold White House
- Newbold-White House
- Nisswa Area Historical Society
- Nontana Ghost Town Prsrvtn
- North Carolina Historic Sites
- North St Paul Historical
- North West Co Fur Post Mn
- Northern Rockies Heritage Ctr
- Norwell Historical Society
- Norwood Historical Society
- Oakeside Bloomfield Cultural
- Ocracoke Preservation Society
- Octagon House Restoration Inc
- Old Wall Historical Society
- Old Wilkes Jail
- Oliver House
- Olmsted National Site
- Paine House
- Pemberton Hall
- Pembroke Historical Society
- Pennsauken Historical Society
- Pennsville Township Historical
- Pigeon Historical Depot
- Pioneer Park
- Pioneer Village
- Poplar Grove Plantation
- Poplar Hill Mansion
- Port O'Plymouth Roanoke River
- Potters Tavern
- Preservation Greensboro Inc
- Preservation Nc
- Preservation New Jersey
- Presque Isle Light House
- Prince Georges Cnty Histioric
- Principio Furnace Foundation
- Proprietary House Assn
- Provine Chapel
- Quincy Historical Society
- Railroad House Historical Scty
- Railroad House Historical Scty
- Rebecca Nurse Homestead
- Renewable Technologies Inc
- Restoration House
- Rindge Historical Society
- Risley Homestead Museum
- Robert Frost Place
- Rockawalkin School
- Roseland Historical Society
- Roy Wilkins Collection
- Russell Country
- Sauk Centre Historical Society
- Save Ellis Island Foundation
- Schwamb Mill Preservation Trst
