Built during 1790s

1790 Footprints (Hawaii County, Hawaii)
1790 House (Middlesex County, Massachusetts)
A. T. House (Greene County, New York)
Aaron Atherton House (Larue County, Kentucky)
Abbott-Decou House (Mercer County, New Jersey)
Abner Gaines House (Boone County, Kentucky)
Abner Gaines House - built in 1790, and first stage stop between Cincinnati, OH and Lexington, KY.
Abraham Barton House (Fayette County, Kentucky)
Abraham Hite House (Jefferson County, Kentucky)
Absalom Scales House (Rutherford County, Tennessee)
Adam Monin House (Hardin County, Kentucky)
Adams Homestead Farm (Sagadahoc County, Maine)
Adams, Benjamin, House (Worcester County, Massachusetts)
Adams, Dr. Daniel, House (Cheshire County, New Hampshire)
Airlie (Adams County, Mississippi)
Airy Mount (Woodford County, Kentucky)
Alexander Bishop House (Knox County, Tennessee)
Alexander-Cleveland House (Elbert County, Georgia)
Alexander-Withrow House (Lexington, Virginia)
Alexandre Latiolais House (Lafayette Parish, Louisiana)
Alfred Shaker Historic District (York County, Maine)
Allmand-Archer House (Norfolk, Virginia)
Allstadt House and Ordinary (Jefferson County, West Virginia)
Alna School (Lincoln County, Maine)
Altona (Jefferson County, West Virginia)
Amoureux House (Ste. Genevieve County, Missouri)
Andrew Baker House (St. Francois County, Missouri)
Andrew Mann Inn (Otsego County, New York)
Andrew Rabb House (Fayette County, Pennsylvania)
Andrews-Moore House (Franklin County, North Carolina)
Angle Tree Stone (Unspecified county, Massachusetts)
Annefield (Clarke County, Virginia)
Appler--Englar House (Carroll County, Maryland)
Apponegansett Meeting House (Bristol County, Massachusetts)
Arcadia Plantation (Georgetown County, South Carolina)
Archibald Henderson Law Office (Rowan County, North Carolina)
Archibald--Adams House (Washington County, Maine)
Arnold Potter House (Yates County, New York)
Operating farm w/ Private Residence
Ash Lawn-Highland (Albemarle County, Virginia)
Aspen Lawn (Southampton County, Virginia)
Attmore-Oliver House (Craven County, North Carolina)
Avondale (Carroll County, Maryland)
Bachelor's Hope (Queen Anne's County, Maryland)
Baily Farm (Chester County, Pennsylvania)
Baker, Judah, Windmill (Barnstable County, Massachusetts)
One of Cape Cod's restored windmills
Baker, Sebastian, Stone House (Ulster County, New York)
Banksia Hall (Barnwell County, South Carolina)
Historic Civil War era home in Barnwell, SC
Baptist Society Meeting House (Middlesex County, Massachusetts)
Barlin Acres (Worcester County, Massachusetts)
Demolished to make way for the clubhouse of the Cyprian Keyes Golf Club
Barn Hill-East Village Schoolhouse (Fairfield County, Connecticut)
A one-room schoolhouse restored as a museum by the Monroe Historical Society.
Barnes-Frost House (Hartford County, Connecticut)
Bartlett, Daniel and Esther, House (Fairfield County, Connecticut)
Bartley--Tweed Farm (New Castle County, Delaware)
Barzillai Weeks House (Barnstable County, Massachusetts)
Basking Ridge Classical School (Somerset County, New Jersey)
Battery Street Historic District (Chittenden County, Vermont)
Beach, Samuel, House (New Haven County, Connecticut)
Beacon Hill Historic District (Suffolk County, Massachusetts)
Beall's Pleasure (Prince George's County, Maryland)
Beardslee Farm (Otsego County, New York)
Beatty-Newell House (Pulaski County, Kentucky)
Beaver Historic District (Beaver County, Pennsylvania)
Beechwood (Southampton County, Virginia)
Belgrade and St. David's Church (Washington County, North Carolina)
Belle Grove (King George County, Virginia)
Bellefonte Historic District (Centre County, Pennsylvania)
Bellevue Rural Historic District (Bedford County, Virginia)
Belmont (Loudoun County, Virginia)
Belmont (Southampton County, Virginia)
Belnemus (Powhatan County, Virginia)
Bement-Billings House (Tioga County, New York)
Benedict, Francis Jr., House (Litchfield County, Connecticut)
Benjamin Iddings Log House (Miami County, Ohio)
Benjamin Jacobs House (Chester County, Pennsylvania)
Benjamin Smith House (Craven County, North Carolina)
Benjamin Washburn House (Shelby County, Kentucky)
Bennett Hill Farm (Albany County, New York)
Berwick Academy (York County, Maine)
Beynroth House (Jefferson County, Kentucky)
Big Bottom Massacre Site (Morgan County, Ohio)
Big Spring Union Church (Claiborne County, Tennessee)
Bissell Tavern-Bissell's Stage House (Hartford County, Connecticut)
Black Horse Tavern (Waldo County, Maine)
Blackwell House (New York County, New York)
Blake, John, House (Orange County, New York)
Blanton-Crutcher Farm (Franklin County, Kentucky)
Blennerhassett Island Historic District (Wood County, West Virginia)
Bloomfield Green Historic District (Essex County, New Jersey)
Blooming Grove (Florence County, South Carolina)
Bloomingdale (Queen Anne's County, Maryland)
Bloomington (Louisa County, Virginia)
Blue Hill Historic District (Hancock County, Maine)
Blue Ridge Farm (Fauquier County, Virginia)
Bluemont Historic District (Loudoun County, Virginia)
Bon Air (Harford County, Maryland)
Bonnie's Bridge (Camden County, New Jersey)
Booker Farm (Union County, Tennessee)
Boonsboro Historic District (Washington County, Maryland)
Bosworth, Benjamin, House (Windham County, Connecticut)
Bourbon Iron Works (Bath County, Kentucky)
Bow Hill (Mercer County, New Jersey)
Bowen, Isaac, House (Kent County, Rhode Island)
Bowling Green Historic District (Caroline County, Virginia)
Bowlsby-Degelleke House (Morris County, New Jersey)
Boykin's Tavern (Isle of Wight County, Virginia)
Boyle-Robertson-Letcher House (Garrard County, Kentucky)
Bradley-Wheeler House (Fairfield County, Connecticut)
An historic house museum, one of the oldest surviving houses in Westport center.
Branham House (Scott County, Kentucky)
Brewster Old King's Highway Historic District (Barnstable County, Massachusetts)
Briggs, Joseph, House--Coventry Town Farm (Kent County, Rhode Island)
Briggs, William, Homestead (Androscoggin County, Maine)
Brookeville Historic District (Montgomery County, Maryland)
Brooklandwood (Baltimore County, Maryland)
Brookside (Saratoga County, New York)
Brown, Morris, House (Providence County, Rhode Island)
Broylesville Historic District (Washington County, Tennessee)
Brush Hill (Westmoreland County, Pennsylvania)
Bryant, William Cullen, Homestead (Hampshire County, Massachusetts)
Buckeye Station (Adams County, Ohio)
Buckingham House (Sevier County, Tennessee)
Buckland (Gates County, North Carolina)
Bucknam House (Washington County, Maine)
Buddha Amazarashi-No-Hotoke (San Francisco County, California)
Buffington, Deacon John, House (Bristol County, Massachusetts)
Buford-Duke House (Scott County, Kentucky)
Bullet Hill School (New Haven County, Connecticut)
Burkittsville (Frederick County, Maryland)
Burpee Farm (Cheshire County, New Hampshire)
Burton Cannon House (Somerset County, Maryland)
Burwell--Holland House (Franklin County, Virginia)
Campbell, Gen. Alexander, House (Washington County, Maine)
Canaan Meetinghouse (Grafton County, New Hampshire)
Canewood Farm (Jessamine County, Kentucky)
Canterbury Shaker Village (Merrimack County, New Hampshire)
Cape Henry Lighthouse (Virginia Beach, Virginia)
Capitol Hill Historic District (Washington, District of Columbia)
Capt. David Vickery House (Bristol County, Massachusetts)
Capt. John H. Banta Homestead (Bergen County, New Jersey)
Capt. Jonathan Stone House (Washington County, Ohio)
Capt. Thomas Blanch House (Bergen County, New Jersey)
Capt. William and Lucas Lucas Robert, House (Jefferson County, West Virginia)
Carlisle House (Sussex County, Delaware)
Carmel Mission (Monterey County, California)
Carpenter House (New London County, Connecticut)
Carriger-Cowan House (Carter County, Tennessee)
Carter Hall (Clarke County, Virginia)
Carter House (Woodford County, Kentucky)
Casa Alvarez (St. Louis County, Missouri)
Cathedral of St. Augustine (St. Johns County, Florida)
Cave Spring (Fayette County, Kentucky)
Cedar Bluff (Union County, South Carolina)
Historic home near Union, SC
Cedar Creek Battlefield and Belle Grove (Unspecified county, Virginia)
Cedar Grove (Baltimore, Maryland)
Cedar Grove (Edgefield County, South Carolina)
Historic home near Edgefield, SC
Cedar Hill (Somerset County, Maryland)
Center Meeting and Schoolhouse (New Castle County, Delaware)
Center Sandwich Historic District (Carroll County, New Hampshire)
Centerbrook Congregational Church (Middlesex County, Connecticut)
Central Square Historic District (Cambridge) (Middlesex County, Massachusetts)
Centreville Historic District (Queen Anne's County, Maryland)
Chadwick-Brittan House (Worcester County, Massachusetts)
Champion, Henry, House (New London County, Connecticut)
Chanceford (Worcester County, Maryland)
Chapel Hill Historic District (Orange County, North Carolina)
Chapel of Santa Cruz (Taos County, New Mexico)
Charles Eversole House (Hunterdon County, New Jersey)
Charlotte Center Historic District (Chittenden County, Vermont)
Chatham Windmill (Barnstable County, Massachusetts)
Checkerboard Inn (Orange County, New York)
Chepachet Village Historic District (Providence County, Rhode Island)
Cherry Grove, HO-1 (Howard County, Maryland)
Chester Hall (Queen Anne's County, Maryland)
Chieftains (Floyd County, Georgia)
Chillicothe Business District (Ross County, Ohio)
Chinook Point (Pacific County, Washington)
Chiswell's Inheritance (Montgomery County, Maryland)
Christ Church (Kent County, Delaware)
Christ Episcopal Church (Schenectady County, New York)
Christopher Erb House (Carroll County, Maryland)
Churchill Bridge (Oxford County, Maine)
Citizens and Southern National Bank of South Carolina (Charleston County, South Carolina)
City Cemetery (Wake County, North Carolina)
City Tavern (Washington, District of Columbia)
Clark, Avery, House (Hartford County, Connecticut)
Clark, Capt. John, House (Windham County, Connecticut)
Clark-Dearstyne-Miller Inn (Rensselaer County, New York)
Clarke, Pitt, House (Bristol County, Massachusetts)
Clearview (Stafford County, Virginia)
Cleveland Public Square (Cuyahoga County, Ohio)
Clinton Village Historic District (Oneida County, New York)
Clover Mount (Augusta County, Virginia)
Cocks, Isaac, House (Orange County, New York)
Col. Abner Gaines House (Boone County, Kentucky)