Built during 1860s

Abraham Groesbeck House (Cook County, Illinois)
Adairs Covered Bridge (Perry County, Pennsylvania)
Covered bridge over Shermans Creek on PA 3008
Adin Randall House (Eau Claire County, Wisconsin)
White frame house that belonged to one of Eau Claire's founding fathers
Ahnapee Brewery (Kewaunee County, Wisconsin)
Former brewery now a popular winery, open for tours
Akron Rural Cemetery Buildings (Summit County, Ohio)
Historic Gothic Cemetery and Supporting Buildings
Alanson M. Kimball House (Waushara County, Wisconsin)
Campus of mid 19th Century buildings centered on a 2-1/2 story frame residence
Albany Custom Mill (Linn County, Oregon)
Wood frame flour mill built 1866
Albany Iron Works, Pattern Shop (Linn County, Oregon)
Brick foundry building constructed 1867
Albert Field Tack Company (Bristol County, Massachusetts)
Alcovy Road Grist Mill (Gwinnett County, Georgia)
Alexander Cook House (Waukesha County, Wisconsin)
Gothic Revival, 1865 house of ashlar stone
Alexander Ramsey House (Ramsey County, Minnesota)
Alexandria National Cemetery (Alexandria, Virginia)
All Saints' Episcopal Cathedral Complex (Milwaukee County, Wisconsin)
Edward Townsend Mix designed complex of cathedral and diocese buildings
Allen and Millard Bank (Madison County, Montana)
Allison Plantation (York County, South Carolina)
Alves Historic District (Henderson County, Kentucky)
Amelia Earhart Birthplace (Atchison County, Kansas)
Amos Shinkle Summer Residence (Kenton County, Kentucky)
Anaconda Hotel (Madison County, Montana)
Anderson Hall (Blount County, Tennessee)
Anderson-Smith House (McCracken County, Kentucky)
Restored Civil War Era mansion now serving as a welcome center/rest area
Andersonville National Historic Site (Sumter County, Georgia)
Confederate prison camp and POW museum
Andrew James Wardlaw House (Warren County, Kentucky)
Andrew Lovelace Jr., House (Ballard County, Kentucky)
Andrew Thomas House (Carroll County, Indiana)
Androscoggin Mill Block (Androscoggin County, Maine)
Anna Lyon House - McKeen Place (Madison County, Montana)
Ansel T. Walling House (Pickaway County, Ohio)
Antietam National Battlefield (Washington County, Maryland)
Archibald M. Kennedy House (Rush County, Indiana)
Arlington Street Church (Suffolk County, Massachusetts)
Armistead Burt House (Abbeville County, South Carolina)
Armour's Warehouse (LaSalle County, Illinois)
Armour-Stiner House (Westchester County, New York)
Armstrong County Courthouse and Jail (Armstrong County, Pennsylvania)
Asbury Methodist Church (Robeson County, North Carolina)
Ashland Bridge (New Castle County, Delaware)
Town lattice covered bridge over Red Clay Creek
Ashpole Presbyterian Church (Robeson County, North Carolina)
Ashuelot Covered Bridge (Cheshire County, New Hampshire)
Covered bridge over Ashuelot River on Gunn Mountain Road in Winchester
Assateague Lighthouse (Accomack County, Virginia)
Astor House Hotel (Jefferson County, Colorado)
Athens State Hospital (Athens County, Ohio)
Attawaugan Manufacturing Company Mill (Windham County, Connecticut)
Brick mill with dormered gable roof and off-center stair tower.
Auburn Historic District (Logan County, Kentucky)
Augspurger Schoolhouse (Butler County, Ohio)
Aurora Colony Ox Barn (Marion County, Oregon)
Clapboard barn built in 1863
Auroraville Fountain (Waushara County, Wisconsin)
Well bored for convenience of travelers and their horses
Austin McDowell House (Franklin County, Ohio)
Aztec Grist Mill (Colfax County, New Mexico)
B'er Chayim Temple (Allegany County, Maryland)
Ballouville Mill (Windham County, Connecticut)
Four-story stucco and rubble-walled mill, one of three of the Attawaugan Manufacturing Co.
Baltimore and Ohio Railroad Martinsburg Shops (Berkeley County, West Virginia)
Banks County Courthouse (Banks County, Georgia)
Bannack Historic District (Beaverhead County, Montana)
Banning House (Los Angeles County, California)
Barney L. Ford Building (Denver County, Colorado)
Barr House (Champaign County, Ohio)
Barret House (Henderson County, Kentucky)
Barretts Mills (Highland County, Ohio)
Bartlett's Blacksmith Shop (Madison County, Montana)
Bartram's Covered Bridge (Chester County, Pennsylvania)
Covered bridge over Crum Creek
Bass Island Brownstone Company Quarry (Ashland County, Wisconsin)
Former quarry, abandoned, part of the Apostle Island National Seashore
Bates-Hendricks House (Marion County, Indiana)
Battery Cheves (Charleston County, South Carolina)
Battery LeRoy (Charleston County, South Carolina)
Battery No. 1 (Charleston County, South Carolina)
Battery No. 5 (Charleston County, South Carolina)
Battery Tynes (Charleston County, South Carolina)
Battery White (Georgetown County, South Carolina)
Battery Wilkes (Charleston County, South Carolina)
Battle of Mine Creek Site (Linn County, Kansas)
Battle of Munfordville Site (Hart County, Kentucky)
Battle of Sacramento Battlefield (McLean County, Kentucky)
Battle of Tebbs Bend (Taylor County, Kentucky)
Baumgardner's Mill Covered Bridge (Lancaster County, Pennsylvania)
Covered bridge over Pequea Creek on Covered Bridge Road
Bay Furnace (Alger County, Michigan)
Bay View Historic District (Milwaukee County, Wisconsin)
Neighborhood of mixed types architecture in homes, businesses, restaurants and nightlife
Bear Mountain Indian Mission School (Amherst County, Virginia)
Beaufort National Cemetery (Beaufort County, South Carolina)
Beckwith House Hotel (Green Lake County, Wisconsin)
Former hotel, now repurposed as an apartment building.
Beecher Island Battleground (Yuma County, Colorado)
Bell, George and Annie, House (Douglas County, Kansas)
Limestone Building burned during Quantrill's raid of Lawrence, Ks.
Belle Isle (Wayne County, Michigan)
Benedict House (Douglas County, Kansas)
The Benedict House is an example of a vernacular, Stick style cottage.
Benjamin F. Turley House (Gallatin County, Kentucky)
Benjamin Smith House (Franklin County, Ohio)
Benninghofen House (Butler County, Ohio)
Benton County Poor Farm Cemetery (Benton County, Arkansas)
Bentonville Battleground State Historic Site (Johnston County, North Carolina)
Bethesda Presbyterian Church (Moore County, North Carolina)
Bethlehem Lutheran Church (Fayette County, Texas)
Beulah Baptist Church (Alexandria, Virginia)
Bigelow Carpet Company Woolen Mills (Worcester County, Massachusetts)
Blaine, James G., House (Kennebec County, Maine)
Blaisdell, Augustus and Laura, House (Windsor County, Vermont)
Block Island North Light (Washington County, Rhode Island)
Blowing Cave Mill (Sevier County, Tennessee)
Boat House Row (Philadelphia County, Pennsylvania)
Boatman-Ainsworth House (Pierce County, Washington)
Bobo Hotel (Moore County, Tennessee)
Bodie Historic District (Mono County, California)
Bollinger Mill (Cape Girardeau County, Missouri)
Bollman Truss Railroad Bridge (Howard County, Maryland)
Bollman through truss bridge over Little Patuxent River in Savage, near the intersection of Goman Road and Foundry Street
Boon Brick Store (Marion County, Oregon)
Boone-Murphy House (Jefferson County, Arkansas)
Borden, N. B., School (Bristol County, Massachusetts)
Boston Flour Mill (Linn County, Oregon)
Boyle County Courthouse (Boyle County, Kentucky)
Braswell-Carnes House (Cobb County, Georgia)
Brechtel Building (Walla Walla County, Washington)
Two story brick and stone commercial building built in 1869
Breezedale (Indiana County, Pennsylvania)
Bridgeport Covered Bridge (Nevada County, California)
Covered bridge over South Fork Yuba River on Pleasant Valley Road in South Yuba State Park
Bridgeport Historic District (Jackson County, Alabama)
Bridgeton Bridge (Parke County, Indiana)
Brierfield Furnace (Bibb County, Alabama)
A historic district in Brierfield, Alabama.
Brockerhoff Hotel (Centre County, Pennsylvania)
Brockerhoff Mill (Centre County, Pennsylvania)
Brooklyn Bridge (Unspecified county, New York)
Suspension bridge over East River between Manhattan and Brooklyn in New York
Brooklyn No. 4 Fire House (Winnebago County, Wisconsin)
Former firehouse, turned sign company, now a privately owned building
Brown, Harrison B., House (Cumberland County, Maine)
Buffington Island (Meigs County, Ohio)
Bushnell Park (Hartford County, Connecticut)
Bussey & McLeod Stove Company (Rensselaer County, New York)
Cast iron stove foundry & assembly factory built in 1863 destroyed in 1931
Butler, A.B., House (Cumberland County, Maine)
Byram's Ford Historic District (Jackson County, Missouri)
Byron Howes House (Dakota County, Minnesota)
C. P. Quattlebaum Office (Horry County, South Carolina)
Historic home in Conway, SC
C.S. Bell Foundry and Showroom (Highland County, Ohio)
Cabin Creek Covered Bridge (Lewis County, Kentucky)
Cabin John Aqueduct (Montgomery County, Maryland)
Calder Houses (Linn County, Iowa)
Calhoun Mill (McCormick County, South Carolina)
California State Capitol (Sacramento County, California)
Calvary Episcopal Church (Jefferson County, Colorado)
Cambria Freight Station (Montgomery County, Virginia)
Camp Bartow Historic District (Pocahontas County, West Virginia)
Camp Butler National Cemetery (Sangamon County, Illinois)
Camp Chase Cemetery (Franklin County, Ohio)
Confederate cemetery located on the west side of Columbus
Camp Ground Methodist Church (Cumberland County, North Carolina)
Camp Nelson National Cemetery (Jessamine County, Kentucky)
Camp Randall (Dane County, Wisconsin)
Civil War Era US Army Camp now home of University of Wisconsin Badger Athletics
Canal Winchester School (Franklin County, Ohio)
Canute Peterson House (Sanpete County, Utah)
Capitol Hill School (Calhoun County, Michigan)
Capt. John P. Nichols House (Waldo County, Maine)
Caradine Building (Green County, Wisconsin)
Carnifex Ferry State Park (Nicholas County, West Virginia)
Casterton House (Licking County, Ohio)
Cathedral of the Immaculate Conception (Cumberland County, Maine)
Cedar Valley Seminary (Mitchell County, Iowa)
One of the most endangered historic sites in Iowa
Center Congregational Church (Litchfield County, Connecticut)
Gothic Revival church built in 1867
Center Methodist Church (Oconee County, South Carolina)
Church between Westminster & Townville, SC
Central Fire Station (Bristol County, Massachusetts)
Central Ludlow Historic District (Kenton County, Kentucky)
Central of Georgia Depot and Trainshed (Chatham County, Georgia)
Central Railroad of New Jersey Station (Luzerne County, Pennsylvania)
Central School (Jackson County, Iowa)
Central United Methodist Church (Wayne County, Michigan)
Central Vermont Railroad Headquarters (Franklin County, Vermont)
Centreville Mill (Kent County, Rhode Island)
Chapin, Philip, House (Litchfield County, Connecticut)
Chapman, Leonard Bond, House (Cumberland County, Maine)
Charles Brown House (Clark County, Washington)
French Second Empire house built 1866
Charles Butler House (Warren County, Ohio)
Charles Duncan House (Douglas County, Kansas)
Chattanooga National Cemetery (Hamilton County, Tennessee)
Cheatham County Courthouse (Cheatham County, Tennessee)
Cheese-vat Factory (Lake County, Ohio)
Cheraw & Darlington Railroad Depot (Darlington County, South Carolina)
Restored freight and passenger depot
Cherokee National Capitol (Cherokee County, Oklahoma)
Choate Cabin (Pittsburg County, Oklahoma)
Christ Chapel (Ada County, Idaho)
Christ Church At The Quarry (Knox County, Ohio)
Christ Church, Detroit (Wayne County, Michigan)
Christ Evangelical Church (Washington County, Wisconsin)
Deconsecrated church now serving as a museum
Christian Church (Delaware County, New York)
Christian Ehresman Farm (Butler County, Ohio)
Christian Foth House (Milwaukee County, Wisconsin)
Christian Gayman House (Franklin County, Ohio)
Church of the Holy Trinity--Catholic (Winona County, Minnesota)
Gothic revival church constructed from locally quarried limestone
Church of the Messiah (Warren County, New York)
Gothic Revival Episcopal church completed in 1865
Church of the Redeemer (Greene County, Georgia)
Historic church in Greensboro, GA
Church Street Historic District (Lexington County, South Carolina)
Church, Volney-Carlos B. Shotwell House (Genesee County, Michigan)
Civil War Monument (Orleans County, Vermont)
War memorial erected in 1866
Civil War Monument (Franklin County, Vermont)
War memorial erected in 1868
Civil War Monument (Warren County, New York)
Civil War monument built in 1868