Built during 1850s

16 Altamont Terrace (Allegany County, Maryland)
2nd Baptist Church (Floyd County, Indiana)
Church that was a stop on the underground railroad
A. A. Erhard House (Bastrop County, Texas)
A. Eliason House (New Castle County, Delaware)
A. H. Chapman House (Butte County, California)
A. Hutchings House (Boyle County, Kentucky)
A. L. Smith House (Lawrence County, Mississippi)
A.C. Waltman House (Lewis County, Missouri)
Aaron A. Sargent House (Nevada County, California)
Aaron Swayzee House (Grant County, Indiana)
Abbe Creek School (Linn County, Iowa)
One-Room Schoolhouse Museum added to the NRHP May 5, 2013
Abel Hagerty House (Elmore County, Alabama)
Abell-Gleason House (Charlottesville, Virginia)
Abernathy Farm (Giles County, Tennessee)
Abijah Thomas House (Smyth County, Virginia)
Abner Martin House (Van Buren County, Iowa)
Abner Phelps House (San Francisco County, California)
Gothic Revival house built in 1850
Abner T. Shaw House (Davidson County, Tennessee)
Abraham Briggs Bowen House (Winnebago County, Wisconsin)
Mid-nineteenth century Italianate mansion
Abraham L. Williams L & N Guest House (Jefferson County, Kentucky)
Abraham Lehman Farmhouse (Franklin County, Ohio)
Abraham Wiley Hill House (Bastrop County, Texas)
Abram Allen House (Rock County, Wisconsin)
Absecon Lighthouse (Atlantic County, New Jersey)
Academy Hall (Erie County, Pennsylvania)
Academy of Music (Philadelphia County, Pennsylvania)
Acorn Hall (Morris County, New Jersey)
Acree Mitchell Grocery Store (Stephens County, Georgia)
Adam Ivy House (Lancaster County, South Carolina)
Adam Pence House (Lincoln County, Kentucky)
Adam Wall House (Montgomery County, Virginia)
Adams County Courthouse (Adams County, Pennsylvania)
Adams Grove Presbyterian Church (Dallas County, Alabama)
A historic Greek Revival-style church building in rural Dallas County, Alabama.
Adams Home Farm (Sussex County, Delaware)
Adams Schoolhouse (Fairfield County, Connecticut)
One-room school maintained by the Historical Society of Easton, CT
Adams, John, School (Norfolk County, Massachusetts)
Adams--French House (Monroe County, Mississippi)
Adams-Edwards House (Wake County, North Carolina)
Adderton - Badgett House (Davidson County, North Carolina)
Adelaide Avenue School (Ontario County, New York)
Former school divided into apartments
Adolphus W. Umstead House (Durham County, North Carolina)
Adon Smith House (Madison County, New York)
Adrian Engine House No. 1 (Lenawee County, Michigan)
Adriatic Mills (Worcester County, Massachusetts)
Adsmore (Caldwell County, Kentucky)
African Church (St. Charles County, Missouri)
Ahearn House and Summer House (Barnstable County, Massachusetts)
Aiken Colored Cemetery (Aiken County, South Carolina)
Airmount Grave Shelter (Clarke County, Alabama)
A brick grave shelter, or grave house, located in the Airmount Cemetery near Thomasville, Alabama.
Alabama Girls' Industrial School (Shelby County, Alabama)
A women-only technical school that also offered high school-level courses.
Alabama Insane Hospital (Tuscaloosa County, Alabama)
Alabama's oldest and largest inpatient psychiatric facility.
Albania (Chowan County, North Carolina)
Albania Plantation House (St. Mary Parish, Louisiana)
Albany Railroad Depot Historic District (Dougherty County, Georgia)
Albee, E., House (Worcester County, Massachusetts)
Albert Lenoir House (Loudon County, Tennessee)
Albert Neal Durden House (Emanuel County, Georgia)
Albert S. Potter House (Washington County, Rhode Island)
Octagon house built by watchmaker Albert S. Potter in 1857.
Albertus Building (Clayton County, Iowa)
Albin P. Dearing House (Clarke County, Georgia)
Albright House (Lee County, Iowa)
Alexander Bache U.S. Coast Survey Line (Charleston County, South Carolina)
Alexander Bagby House (Boyd County, Kentucky)
Alexander Chene House (Wayne County, Michigan)
Alexander Faribault House (Rice County, Minnesota)
Alexander H. Keith House (McMinn County, Tennessee)
Alexander Liddle Farmhouse (Schenectady County, New York)
Alexander Majors House (Jackson County, Missouri)
Alexander Mitchell House (Milwaukee County, Wisconsin)
Second Empiire mansion on Milwaukee's near west side
Alexander Willis House (Albany County, New York)
Alexander Woods House (Calhoun County, Alabama)
Alfred Buffat Homestead (Knox County, Tennessee)
Alfred Drowne Road Historic District (Bristol County, Rhode Island)
Alfred Dunk House (Broome County, New York)
Alfred Hatch Place at Arcola (Hale County, Alabama)
A historic plantation house and historic district on the Black Warrior River several miles northwest of Gallion, Alabama.
Alfred Moore Scales Law Office (Rockingham County, North Carolina)
Alfred W. Roberts House (Cherokee County, Georgia)
Algiers Point (Orleans Parish, Louisiana)
Alice C Planation House (St. Mary Parish, Louisiana)
Alkali Flat Central Historic District (Sacramento County, California)
Allamakee County Courthouse (Allamakee County, Iowa)
Allegheny Tunnel (Cambria County, Pennsylvania)
Middle bore of three through Tunnel Hill, Gallitzin PA
Allen County Jail (Allen County, Kansas)
Allen Dial House (Laurens County, South Carolina)
Allen Grove (Marengo County, Alabama)
A plantation and historic district located in Old Spring Hill, Alabama.
Allen House (Middlesex County, Massachusetts)
Allen House (Dubuque County, Iowa)
Allen Welton House (Summit County, Ohio)
Allen-Bell House (Bastrop County, Texas)
Allenhurst (Scott County, Kentucky)
Allentown Mill (Monmouth County, New Jersey)
Allin House (Phillips County, Arkansas)
Allison-Robinson House (Owen County, Indiana)
Almshouse (Middlesex County, Massachusetts)
Almshouse (Middlesex County, Massachusetts)
Alois Herbert Double House (Buchanan County, Missouri)
Alpine LDS Church Meetinghouse (Utah County, Utah)
Alston-Cobb House (Clarke County, Alabama)
A historic house museum in Grove Hill, Alabama.
Altaville (Calaveras County, California)
Altaville Grammar School (Calaveras County, California)
Alumni Hall (Allegany County, New York)
Alverson--Copeland House (Livingston County, New York)
Alvin T. Smith House (Washington County, Oregon)
Alviso Historic District (Santa Clara County, California)
Amana Villages (Iowa County, Iowa)
American House (Clayton County, Iowa)
Ames-Florida House (Hennepin County, Minnesota)
Amesbury Friends Meeting House (Essex County, Massachusetts)
Amite Female Seminary (Amite County, Mississippi)
Ammadelle (Lafayette County, Mississippi)
Ammi and William Wright House (Saginaw County, Michigan)
Anacostia Historic District (Washington, District of Columbia)
Anderson Historic District (Anderson County, South Carolina)
Historic residential district in Anderson, SC
Anderson House and Lexington Battlefield (Lafayette County, Missouri)
Anderson--Coward House (Shelby County, Tennessee)
Anderson--Thompson House (Marion County, Indiana)
Anderson-Foster House (Louisa County, Virginia)
Anderson-Shaffer House (Butler County, Ohio)
Andover Town Hall (Essex County, Massachusetts)
Andreas Breustedt House (Comal County, Texas)
Andrew Barnes House (Waukesha County, Wisconsin)
No longer at this address, moved in 1995
Andrew Brier House (Warren County, Indiana)
Andrew Cunningham Farm (Cass County, Illinois)
Andrew F. Scott House (Wayne County, Indiana)
Andrew Gantner House (Cooper County, Missouri)
Andrew J. Cheney House (Cobb County, Georgia)
Andrew J. Stevens House (Kalamazoo County, Michigan)
Andrew McCoy House (Barren County, Kentucky)
Andrew Smith House (Yamhill County, Oregon)
Andrew Weisel House (Kane County, Illinois)
Andrews, Joseph, House (Middlesex County, Massachusetts)
Andrews--Wing House (Cooper County, Missouri)
Androscoggin County Courthouse and Jail (Androscoggin County, Maine)
Angel's Hill Historic District (Chisago County, Minnesota)
Angell--Brewster House (Linn County, Oregon)
Angels Hotel (Calaveras County, California)
Angles, The (McCracken County, Kentucky)
Anna Jarvis House (Taylor County, West Virginia)
Annandale Historic District (Hunterdon County, New Jersey)
Annefield (Charlotte County, Virginia)
Annesdale (Shelby County, Tennessee)
Anson Davis Springhouse (Franklin County, Ohio)
Anson Warner Farmstead (Walworth County, Wisconsin)
Anthony Pitzer Jr., House (Licking County, Ohio)
Anthracite Bank Building (Schuylkill County, Pennsylvania)
Antioch Christian Church (Clay County, Missouri)
Antoine LeClaire House (Scott County, Iowa)
Anton Schmitt House (St. Louis, Missouri)
Apostle Islands Lighthouses (Unspecified county, Wisconsin)
Appellate Court, 5th District (Jefferson County, Illinois)
Aransas Pass Light Station (Aransas County, Texas)
Arbor Lodge (Otoe County, Nebraska)
Arcadia (Sullivan County, Tennessee)
Arch Bridge (Lincoln County, Maine)
Arch Street Presbyterian Church (Philadelphia County, Pennsylvania)
Archambault House (St. Louis County, Missouri)
Arcola Presbyterian Church (Tangipahoa Parish, Louisiana)
Arlington Green Covered Bridge (Bennington County, Vermont)
Armitage (Terrebonne Parish, Louisiana)
Armsmear (Hartford County, Connecticut)
Armstrong-Lee House (Lawrence County, Mississippi)
Arnold-Rauch-Brandt Homestead (Comal County, Texas)
Arnoldus Brumby House (Cobb County, Georgia)
Aroostook County Courthouse and Jail (Aroostook County, Maine)
Arrowhead (Albemarle County, Virginia)
Arrowsic Town Hall (Sagadahoc County, Maine)
Arsenal Hill (Richland County, South Carolina)
Arthur Goodson House (Darlington County, South Carolina)
Arthur R. Hoard House (Jefferson County, Wisconsin)
Asa Packer Mansion (Carbon County, Pennsylvania)
Asahel Green Farm (Yates County, New York)
Asahel Kidder House (Rutland County, Vermont)
Ash Hollow Historic District (Garden County, Nebraska)
Ash Street Historic District (Middlesex County, Massachusetts)
Ashcrest Farm (Sumner County, Tennessee)
Ashland Mill Tenement (Worcester County, Massachusetts)
Ashland Town House (Middlesex County, Massachusetts)
Ashtabula County Courthouse Group (Ashtabula County, Ohio)
Ashton Villa (Galveston County, Texas)
Aston Inn (Marion County, Indiana)
Athens Downtown Historic District (Athens County, Ohio)
Athens Factory (Clarke County, Georgia)
Athenwood and Thomas W. Wood Studio (Washington County, Vermont)
Atkins--Johnson Farmhouse Property (Clay County, Missouri)
Atkinson-Smith House (Johnston County, North Carolina)
Atwood, Charles R., House (Bristol County, Massachusetts)
Auburn (Culpeper County, Virginia)
Auburn Players Theater (Lee County, Alabama)
The oldest building in its original location on the campus of Auburn University in Auburn, Alabama.
Auburndale Congregational Church (Middlesex County, Massachusetts)
Audubon Plantation House (East Baton Rouge Parish, Louisiana)
Aue Stagecoach Inn (Bexar County, Texas)
Augusta Memorial Park Historic Section (Woodruff County, Arkansas)
Augusta Sledge House (Hale County, Alabama)
A historic plantation house and historic district near Newbern, Alabama.
Augustine Hansell House (Thomas County, Georgia)
Augustus Fanno Farmhouse (Washington County, Oregon)
Augustus Howland House (Cayuga County, New York)