Built 1848

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Abijah II O'Neall House (Montgomery County, Indiana)
Ackerville Baptist Church of Christ (Wilcox County, Alabama)
A historic church in Ackerville, Alabama.
Ahira R. Hinkley House (Waukesha County, Wisconsin)
Ainsworth E. Blunt House (Whitfield County, Georgia)
Alanson Pomeroy House (Cuyahoga County, Ohio)
Albany Town House (Oxford County, Maine)
All Saints Episcopal Church (Westchester County, New York)
Allen House (De Soto Parish, Louisiana)
Allen, Nathaniel Topliff, Homestead (Middlesex County, Massachusetts)
Allen-Beville House (Queens County, New York)
Anderson Brothers Building (Charlottesville, Virginia)
Anson Davis House (Franklin County, Ohio)
Arnot House (Harrison County, Texas)
Asbury Methodist Episcopal Church (Wicomico County, Maryland)
Bancroft and Sons Cotton Mills (New Castle County, Delaware)
Beardsley Avenue Historic District (Elkhart County, Indiana)
Beauchamp-Newman House (Wirt County, West Virginia)
Bennett-Tobler-Pace-Oliver House (Cape Girardeau County, Missouri)
Benton Park District (St. Louis, Missouri)
Bergy Bridge Historic District (Montgomery County, Pennsylvania)
Biloxi Lighthouse (Harrison County, Mississippi)
Bitzer's Mill Covered Bridge (Lancaster County, Pennsylvania)
Black Walnut (Halifax County, Virginia)
Blocksom-Rolls House (Muskingum County, Ohio)
Boonville Historic District (Oneida County, New York)
Botetourt County Courthouse (Botetourt County, Virginia)
Burch-Mitchell House (Thomas County, Georgia)
Butler Street Gatehouse (Allegheny County, Pennsylvania)
Campbell County Courthouse (Campbell County, Virginia)
Carlin-Rathgeber House (St. Louis, Missouri)
Carson Hill (Calaveras County, California)
Carysfort Lighthouse (Monroe County, Florida)
Cataldo Mission (Kootenai County, Idaho)
Cathedral of the Immaculate Conception (Albany County, New York)
Cave Hill Cemetery (Jefferson County, Kentucky)
Chagrin Falls Township Hall (Cuyahoga County, Ohio)
Chamizal National Memorial (El Paso County, Texas)
Charles de Montel House (Medina County, Texas)
Charles Torrey House (Oakland County, Michigan)
Charles W. Russell House (Ohio County, West Virginia)
Chelsea (New Castle County, Delaware)
Christ Episcopal Church (Wake County, North Carolina)
Church Hill (Rockbridge County, Virginia)
Church Hill Industrial District (Providence County, Rhode Island)
City Hall Historic District (Monroe County, New York)
Coloma (El Dorado County, California)
Converse-Mertz Apartments (Erie County, Ohio)
Cordova House (Pima County, Arizona)
Crandall, Lorenzo, House (Providence County, Rhode Island)
Cullum Mansion (Smith County, Tennessee)
Cunningham House (Mercer County, Kentucky)
Danish Windmill (Shelby County, Iowa)
60 foot high windmill built in 1848
Davenport Village (Scott County, Iowa)
Deane-Williams House (Middlesex County, Massachusetts)
Dr. B. Stauffer House (Lebanon County, Pennsylvania)
Dr. Havilah Beardsley House (Elkhart County, Indiana)
Dr. Jonathan Pitney House (Atlantic County, New Jersey)
Dr. Samuel Vaughn Jump House (Delaware County, Indiana)
Dr. William Columbus Cauthen House (Lancaster County, South Carolina)
Drake, Frances H. and Jonathan, House (Worcester County, Massachusetts)
Dudley Block (York County, Maine)
Duncan McFarland House (Cuyahoga County, Ohio)
Dusenberry House (Morris County, New Jersey)
East Washington School District #5 (Sullivan County, New Hampshire)
One-room schoolhouse built in 1848 and closed in 1936 contains original desks and furnishings.
Edinburg Mill (Shenandoah County, Virginia)
Edward Dodge House (Ozaukee County, Wisconsin)
Cobblestone constructon home, repurposed to be the local visitor's center.
Elmhurst (Brooke County, West Virginia)
Embden Town House (Somerset County, Maine)
Empire House (Wood County, Ohio)
Enfield Congregational Church (Hartford County, Connecticut)
Greek Revival style church designed by Sidney Mason Stone built in 1848
Enfield Historic District (Hartford County, Connecticut)
Erin (Warren County, Virginia)
Fairlee Railroad Depot (Orange County, Vermont)
First Baptist Church (Craven County, North Carolina)
Forest Hills Cemetery (Suffolk County, Massachusetts)
Fort Delaware on Pea Patch Island (New Castle County, Delaware)
Fort Kearney (Kearney County, Nebraska)
Fort Ringgold Historic District (Starr County, Texas)
Foster Carling House (Los Angeles County, California)
Foster, Reuben, House and Cleaves, Perley, House (Merrimack County, New Hampshire)
Founder's Hall, Girard College (Philadelphia County, Pennsylvania)
Franklin Boulevard Historic District (Oakland County, Michigan)
Freeman, Mary and Eliza, Houses (Fairfield County, Connecticut)
Gale, George, House (Worcester County, Massachusetts)
Garrison Landing Historic District (Putnam County, New York)
George Griswold House (Columbia County, Wisconsin)
Gibbs House (Niagara County, New York)
Glen Ferris Inn (Fayette County, West Virginia)
Glen Mary (Hancock County, Georgia)
Gorham Vining P., House (Winnebago County, Wisconsin)
Private residence
Gough, John B., House (Worcester County, Massachusetts)
Greenough, Byron, Block (Cumberland County, Maine)
Hadley Falls Company Housing District (Hampden County, Massachusetts)
Hamilton Farmstead (Oswego County, New York)
Hamlin, Hannibal, House (Penobscot County, Maine)
Hartman, William, Farmstead (Livingston County, New York)
Private Residence
Hartwood Manor (Stafford County, Virginia)
Hebron Methodist Church (Warren County, North Carolina)
Hook and Ladder Company No. 2 (Jefferson County, Kentucky)
Howard House (Anderson County, Texas)
Hunt House (Seneca County, New York)
Iberville Parish Courthouse (Iberville Parish, Louisiana)
Illinois and Michigan Canal (Will County, Illinois)
96 mi, canal from Chicago to LaSalle
Indian Fields Methodist Campground (Dorchester County, South Carolina)
Jackson Iron Company Site (Marquette County, Michigan)
Jackson Mine (Marquette County, Michigan)
James Galigher House (Muskingum County, Ohio)
James Williams House (Kent County, Delaware)
Jefferson County Jail (Jefferson County, Indiana)
Jewett Presbyterian Church Complex (Greene County, New York)
Jonathan Clark Conger House (Washington County, Iowa)
Jonathan Clark House (Ozaukee County, Wisconsin)
Jordan Village Historic District (New London County, Connecticut)
Justin Weed House (Kenosha County, Wisconsin)
Kamiakin's Gardens (Yakima County, Washington)
Key West Lighthouse (Monroe County, Florida)
La Mesilla Historic District (Dona Ana County, New Mexico)
Lackawanna Iron and Coal Company Furnace (Lackawanna County, Pennsylvania)
The Lackawanna Iron and Coal Company's four blast furnace stacks
Lain-Estburg House (Waukesha County, Wisconsin)
Greek Revival Home repurposed to American Legion Hall and restaurant.
Lane's Mill Historic Buildings (Butler County, Ohio)
Lassen Emigrant Trail (Lassen County, California)
Lassen Emigrant Trail, Bieber (Lassen County, California)
Lee Hall (Newport News, Virginia)
Legg House (Monroe County, Indiana)
Lenhart Farmhouse (Adams County, Indiana)
Linwood (East Feliciana Parish, Louisiana)
Lockington Covered Bridge (Shelby County, Ohio)
Longfield (Bristol County, Rhode Island)
Luke and Eliza Page Stoughton House (Dane County, Wisconsin)
Founder's House now serving as a museum
Lund Building (Yakima County, Washington)
Lynnville Mill and Dam (Jasper County, Iowa)
M'Clintock House (Seneca County, New York)
Maidstone Manor Farm (Berkeley County, West Virginia)
Maine Woods Office (Franklin County, Maine)
Maple-Dell (Mahoning County, Ohio)
Marsh, Alexander, House (Worcester County, Massachusetts)
Mask and Wig Club of the University of Pennsylvania (Philadelphia County, Pennsylvania)
May--Hickey House (DeWitt County, Texas)
McCoy House (Pendleton County, West Virginia)
Michael Smith House (Braxton County, West Virginia)
Miller-Davis Law Buildings (McLean County, Illinois)
Montford Area Historic District (Buncombe County, North Carolina)
Mount Savage Iron Furnace (Carter County, Kentucky)
Noblit-Lytle House (Giles County, Tennessee)
North Grove Street Historic District (Westchester County, New York)
North Ridge United Methodist Church (Niagara County, New York)
North Side Historic District (Anderson County, Texas)
Northampton Downtown Historic District (Hampshire County, Massachusetts)
Oakwood Cemetery (Rensselaer County, New York)
Old Cape May County Courthouse Building (Cape May County, New Jersey)
Old Mahoning County Courthouse (Mahoning County, Ohio)
Old Marion County Courthouse (Marion County, Georgia)
Old Mill (Dukes County, Massachusetts)
Old Town Bridge (Middlesex County, Massachusetts)
Oliver P. Morton House (Wayne County, Indiana)
Oneida Community Mansion House (Madison County, New York)
Paddock Building (Franklin County, New York)
Pan American C.M.A. Church (Essex County, New Jersey)
Parkhurst (Anne Arundel County, Maryland)
Payne Hotel (Ozaukee County, Wisconsin)
Old hotel and meeting place repurposed as apartments.
Peck House (Columbia County, New York)
Pine Creek Gristmill (Muscatine County, Iowa)
Pomeroy Historic District (Meigs County, Ohio)
Poplar Hill (Harrison County, Kentucky)
Porter House (Henry County, Tennessee)
Powhatan Courthouse Historic District (Powhatan County, Virginia)
Prairie Plantation House (Coahoma County, Mississippi)
Queen Emma's Summer Home (Honolulu County, Hawaii)
Reading's Bar (Shasta County, California)
Reservoir Park (Norfolk County, Massachusetts)
Rhea House (Johnson County, Tennessee)
Richmond Hill Law School (Yadkin County, North Carolina)
Robert Gardner, Jr. House (Salt Lake County, Utah)
Robidoux Pass (Scotts Bluff County, Nebraska)
Robinson's Ferry (Calaveras County, California)
Ferry crossing the Stanislaus River established 1848 abandoned in 1911
Rockwood (Orange County, Virginia)
Roselawn (Boyle County, Kentucky)
Rumsey Hall (Litchfield County, Connecticut)
Saints Peter And Paul Church (Wayne County, Michigan)
Salmon Falls Mill Historic District (Strafford County, New Hampshire)
Samuel D. Byrd Sr., Homestead (Grant County, Arkansas)
San Juan Bautista Third Street Historic District (San Benito County, California)
Sands, Hiram, House (Middlesex County, Massachusetts)
Scott County Courthouse (Scott County, Tennessee)
County courthouse building in Huntsville, TN
Second Congregational Church (Lincoln County, Maine)