Asa Walton House (Chester County, Pennsylvania)
Asa White House (Greene County, Alabama)
A historic house in Eutaw, Alabama.
Asa Wilson House (Davis County, Iowa)
Asahel Bush House (Marion County, Oregon)
Asahel Hart Woodruff House (Salt Lake County, Utah)
Asahel Kidder House (Rutland County, Vermont)
Asbury and Sallie Hodgson House (Rabun County, Georgia)
Asbury House (Putnam County, West Virginia)
Asbury White House (Pueblo County, Colorado)
Ash Hill (Prince George's County, Maryland)
Ash Lawn-Highland (Albemarle County, Virginia)
Ashbourne (Jefferson County, Kentucky)
Ashby (Montgomery County, Indiana)
Ashcroft (Ontario County, New York)
Ashcroft--Merrill Historic District (McKinley County, New Mexico)
Ashe Cottage (Marengo County, Alabama)
A historic Carpenter Gothic house in Demopolis, Alabama.
Ashe House (Hardin County, Kentucky)
Asher Brand Residence (Franklin County, Ohio)
Asher W. Bizzell House (Sampson County, North Carolina)
Ashland (Bertie County, North Carolina)
Ashland (Fayette County, Kentucky)
Ashland (Vance County, North Carolina)
Ashland (Ascension Parish, Louisiana)
Ashland (Prince George's County, Maryland)
Ashlawn (New London County, Connecticut)
Ashleigh (Fauquier County, Virginia)
Ashley House (Bristol County, Massachusetts)
Ashley Shanty and Privy (Brule County, South Dakota)
Ashley-Alexander House (Lonoke County, Arkansas)
Ashley-Willis House (Barnwell County, South Carolina)
Historic home in Williston, SC
Ashtabula (Anderson County, South Carolina)
Historic plantation home near Pendleton, SC
Ashton House (Onondaga County, New York)
Ashton Villa (Galveston County, Texas)
Ashton--Driggs House (Utah County, Utah)
Ashurst House (Coconino County, Arizona)
Ashworth-Remillard House (Santa Clara County, California)
Aslak Lie Cabin (Dane County, Wisconsin)
Aspen Hall (Berkeley County, West Virginia)
Aspen Hall (Chatham County, North Carolina)
Aspen Hill (Jefferson County, West Virginia)
Aspen Lawn (Southampton County, Virginia)
Aspendale (Kent County, Delaware)
Assington (Middlesex County, Massachusetts)
Aston Building (Collin County, Texas)
Aston Inn (Marion County, Indiana)
Atalaya (Georgetown County, South Carolina)
Atchison A. Ashby House (Woodbury County, Iowa)
Athenaeum, The (Maury County, Tennessee)
Athenwood and Thomas W. Wood Studio (Washington County, Vermont)
Atherton House (San Francisco County, California)
Athol (Chowan County, North Carolina)
Athol (Caroline County, Maryland)
Atkins and Smith House (Beaver County, Utah)
Atkins--Carter House (Lawrence County, Kentucky)
Atkins--Johnson Farmhouse Property (Clay County, Missouri)
Atkinson House (Williamson County, Texas)
Atkinson House (Napa County, California)
Atkinson--Morris House (Lamar County, Texas)
Atkinson-Smith House (Johnston County, North Carolina)
Atlanta Women's Club (Fulton County, Georgia)
Atlantic House (Cumberland County, Maine)
Atsion Village (Burlington County, New Jersey)
Attewall Wootton Jr., House (Wasatch County, Utah)
Attlio and Jane Pierotti House (Orange County, California)
Attmore-Oliver House (Craven County, North Carolina)
Attoway R. Davis Home (Greene County, Alabama)
A historic house in Eutaw, Alabama.
Attwood--Hopson House (Cleveland County, Arkansas)
Atwater, George, House (New Haven County, Connecticut)
Atwater-Linton House (New Haven County, Connecticut)
Atwater-Stone House (Chautauqua County, New York)
Atwood, Charles R., House (Bristol County, Massachusetts)
Atwood, Ephraim, House (Middlesex County, Massachusetts)
Atwood-Higgins Historic District (Barnstable County, Massachusetts)
Aubert Place (St. Louis, Missouri)
Aubrey Burnett House (Warren County, Kentucky)
Aubrey R. Watzek House (Multnomah County, Oregon)
Auburn (Caroline County, Virginia)
Auburn (Adams County, Mississippi)
Auburn (Culpeper County, Virginia)
Auburn House (Baltimore County, Maryland)
Audubon (Scott County, Kentucky)
Audubon Plantation House (East Baton Rouge Parish, Louisiana)
Aue Stagecoach Inn (Bexar County, Texas)
August Akerlund Photographic Studio (Wright County, Minnesota)
August and Amalia Shivelbine House (Cape Girardeau County, Missouri)
August and Margaretha Rehnstrom House (Henry County, Illinois)
August and Mary Westphal House (Washington County, Wisconsin)
English Tudor style mansion now operating as a bed and breakfast
August Aubuchon House (St. Louis County, Missouri)
August Baron House (Bastrop County, Texas)
August Bepler House (Hamilton County, Ohio)
August Beresheim House (Pottawattamie County, Iowa)
August Cornelius Larson House (Dane County, Wisconsin)
August Elzner House (Bastrop County, Texas)
August F. Martzahn House (Scott County, Iowa)
August F. Poehler House (Sibley County, Minnesota)
August Fuermann Jr., and Eliza, House (Jefferson County, Wisconsin)
August G. and Theresa Green House (Portage County, Wisconsin)
Clapboard Queen Anne house with a three-story tower
August H. Bergman House (Jasper County, Iowa)
Mission style mansion built in 1909
August Holver Hilton House (Socorro County, New Mexico)
August Johnson House (St. Croix County, Wisconsin)
August Kuebeler House (Erie County, Ohio)
August Meyer House (Jackson County, Missouri)
August Olson House (Multnomah County, Oregon)
August Sauer House (Campbell County, Kentucky)
August Schell Brewing Company (Brown County, Minnesota)
August Sehrt House (St. Charles County, Missouri)
August Sommer House (Marion County, Indiana)
August W. Derleth House (Sauk County, Wisconsin)
A stone dwelling built by author August W Derleth, named for the title of a book
August Zeppenfeld House (Johnson County, Indiana)
Augusta Hofheinz House (Hays County, Texas)
Augusta Sledge House (Hale County, Alabama)
A historic plantation house and historic district near Newbern, Alabama.
Auguste Aubuchon House (Ste. Genevieve County, Missouri)
Auguste Erath Building (Iberia Parish, Louisiana)
Augustine Celaya House (Cameron County, Texas)
Augustine Hansell House (Thomas County, Georgia)
Augustus and Augusta Gerhart House (Hyde County, South Dakota)
Augustus B. Patton House (Weber County, Utah)
Augustus Caesar Dodge House (Des Moines County, Iowa)
Augustus Fanno Farmhouse (Washington County, Oregon)
Augustus Frisbie House (Herkimer County, New York)
Augustus Garland House (Pulaski County, Arkansas)
Augustus Howland House (Cayuga County, New York)
Augustus J. Oakes House (Yazoo County, Mississippi)
Augustus Lilly House (Allegan County, Michigan)
Augustus Paddock House (Kent County, Michigan)
Augustus Sander House (Benton County, Missouri)
Aultman House (Las Animas County, Colorado)
Aumic House (Albany County, New York)
Aurora (Mineral County, Nevada)
Aurora (Patrick County, Virginia)
Aurora Buttles House (Franklin County, Ohio)
Ausenbaugh-McElhenny House (Montgomery County, Ohio)
Austen, Elizabeth Alice, House (Richmond County, New York)
Austerlitz (Pointe Coupee Parish, Louisiana)
Austin Copeland House I (Harris County, Texas)
Austin Copeland House II (Harris County, Texas)
Austin House (Manatee County, Florida)
Austin McDowell House (Franklin County, Ohio)
Austin North House (Yellowstone County, Montana)
Austin Pangburn House (White County, Arkansas)
Austin, A. Everett, House (Hartford County, Connecticut)
Austin, Francis B., House (Suffolk County, Massachusetts)
Austin, Richard, House (Westchester County, New York)
Austin-Hennessey Homestead (York County, Maine)
Austin-McDonald House (San Juan County, New Mexico)
Austin-Wherritt House (Wasatch County, Utah)
Austin-Whittemore House (Clay County, South Dakota)
Austintown Log House (Mahoning County, Ohio)
Autrey House (Lincoln Parish, Louisiana)
Autun (Chester County, Pennsylvania)
Avalon (Carroll County, Maryland)
Avanell Wright House (White County, Arkansas)
Avant House (Covington County, Alabama)
Avant House (Barnstable County, Massachusetts)
Avenel (Bedford, Virginia)
Averitt House (Miller County, Arkansas)
Averitt--Herod House (Trousdale County, Tennessee)
Averitt--Winchester House (Leon County, Florida)
Avero House (St. Johns County, Florida)
Avery Coonley House (Cook County, Illinois)
Avery Farmhouse (Schenectady County, New York)
Avery Homestead (New London County, Connecticut)
Avery House (Larimer County, Colorado)
Avery House (New London County, Connecticut)
Avery House (Yamhill County, Oregon)
Avery Russell House (Knox County, Tennessee)
Avery, Thomas, House (New London County, Connecticut)
Avery-Hunter House (Licking County, Ohio)
Avirett-Stephens Plantation (Onslow County, North Carolina)
Avoca (Campbell County, Virginia)
Avoca Lodge (Denver County, Colorado)
Avondale (Carroll County, Maryland)
Avondale Plantation Home (East Feliciana Parish, Louisiana)
Axel Bohman House (Latah County, Idaho)
Axel Johnson Ranch (Harding County, South Dakota)
Axel Nixon House (Ada County, Idaho)
Axil Johnson House (Baldwin County, Alabama)
Aycock House (Conway County, Arkansas)
Aydelott House (Jefferson County, Kentucky)
Ayer, Albert, House (Middlesex County, Massachusetts)
Ayer, Caleb R., House (York County, Maine)
Ayer, Thomas, House (Middlesex County, Massachusetts)
Ayer-Shea House (Multnomah County, Oregon)
Ayers House (Fergus County, Montana)
Ayers-Allen House (Middlesex County, New Jersey)
Aynesworth-Wright House (Travis County, Texas)
Ayr Mount (Orange County, North Carolina)
Ayres House (Woodford County, Kentucky)
Ayres L. Bramble House (Hamilton County, Ohio)
Aztec Ruins Administration Building--Museum (San Juan County, New Mexico)
Azurest South (Chesterfield County, Virginia)
B. A. and Ruth Stover House (Deschutes County, Oregon)
B. C. Calvert House (Boone County, Kentucky)
B. C. Wall House (Aiken County, South Carolina)
B. C. Wandell House--The Cedars (Bergen County, New Jersey)