Built 1829

View Exhibit map

Aaron Aldrich House (Cuyahoga County, Ohio)
Akron Cemetery (Independence County, Arkansas)
Ambrose Baber House (Bibb County, Georgia)
Andrew Johnston House (Giles County, Virginia)
Arlington Plantation House (St. Landry Parish, Louisiana)
Barcelona Lighthouse and Keeper's Cottage (Chautauqua County, New York)
Beaver Dam Plantation House (Mecklenburg County, North Carolina)
Beecher Hall, Illinois College (Morgan County, Illinois)
Carrollton Downtown Historic District (Carroll County, Georgia)
Center Inn (Delaware County, Ohio)
Center Meeting House and Common (Oxford County, Maine)
Central Congregational Church (Washington County, Maine)
Chambers-Morgan Farm (Anson County, North Carolina)
Cherry Mansion (Hardin County, Tennessee)
Chippokes Plantation (Surry County, Virginia)
Christ Hamilton United Lutheran Church and Cemetery (Monroe County, Pennsylvania)
Col. Francis Dancy House (Morgan County, Alabama)
Col. Henry Hewitt Wood House (Kanawha County, West Virginia)
Cox, Richard, House (Suffolk County, New York)
Danville Commercial District (Boyle County, Kentucky)
David Crawford House (Orange County, New York)
David Houser House (Calhoun County, South Carolina)
Deshon-Allyn House (New London County, Connecticut)
Dr. William Henderson House (Dauphin County, Pennsylvania)
Eastern Lock of the Chesapeake and Delaware Canal (New Castle County, Delaware)
Eastern State Penitentiary (Philadelphia County, Pennsylvania)
Edmund Robinson House (Warren County, Ohio)
Ellicottville Town Hall (Cattaraugus County, New York)
Elliott and Stoddard Halls, Miami University (Butler County, Ohio)
Enfield Canal (Hartford County, Connecticut)
5.25 mile navigation canal
Farmington Canal-New Haven and Northampton Canal (Unspecified county, Connecticut)
First Baptist Church (Bristol County, Massachusetts)
First Presbyterian Church of Wantage (Sussex County, New Jersey)
Fort Crawford Military Hospital (Crawford County, Wisconsin)
Fort Pulaski National Monument (Chatham County, Georgia)
Fowler's Mills Historic District (Geauga County, Ohio)
General Post Office (Washington, District of Columbia)
Geneva (Rapides Parish, Louisiana)
Glen Burnie (Fluvanna County, Virginia)
Glens Falls Feeder Canal (Unspecified county, New York)
Gorgas-Manly Historic District (Tuscaloosa County, Alabama)
A historic district that includes 12 acres (4.9 ha) and eight buildings on the campus of the University of Alabama in Tuscaloosa, Alabama.
Gulick-Rowell House (Kauai County, Hawaii)
Hartville Hotel (Stark County, Ohio)
Haverhill--Bath Covered Bridge (Grafton County, New Hampshire)
Henderson--Orr House (Coweta County, Georgia)
Hinton Rowan Helper House (Davie County, North Carolina)
Ivy Mills Historic District (Delaware County, Pennsylvania)
J. B. Royce House and Farm Complex (Tioga County, New York)
Jacksonville Historic District (Morgan County, Illinois)
Jacob Leiby Farm (Berks County, Pennsylvania)
Jared Irwin House (Stewart County, Georgia)
Jefferson Cattle Pound (Lincoln County, Maine)
John Jacob Schaub House (Forsyth County, North Carolina)
John Patton Log Cabin (McLean County, Illinois)
Johnson, Nathan and Mary, Properties (Bristol County, Massachusetts)
Johnson-Pence House (Scott County, Kentucky)
Kenmore (Spotsylvania County, Virginia)
Kennebec County Courthouse (Kennebec County, Maine)
Kenyon College (Knox County, Ohio)
Lake O'Woods (Warren County, North Carolina)
Lake Orion Historic District (Oakland County, Michigan)
Leicester Meeting House (Addison County, Vermont)
Maine State House (Kennebec County, Maine)
Mathews House (Lake County, Ohio)
McDonald Farm (Greene County, Ohio)
Mercer Union Meetinghouse (Somerset County, Maine)
Mission Church (Mackinac County, Michigan)
Moody Farm (Waldo County, Maine)
Mount Hope (Fauquier County, Virginia)
Nicoll Halsey House and Halseyville Archeological Sites (Tompkins County, New York)
North Saint Georges Historic District (New Castle County, Delaware)
Octagon House (Muscogee County, Georgia)
Old Lock Pump House, Chesapeake and Delaware Canal (Cecil County, Maryland)
Old Washington Historic District (Guernsey County, Ohio)
Orono Main Street Historic District (Penobscot County, Maine)
Patterson Viaduct Ruins (Unspecified county, Maryland)
Pennsylvania Canal and Limestone Run Aqueduct (Northumberland County, Pennsylvania)
Pickett Chapel Methodist Church (Wilson County, Tennessee)
Pine Ridge Church (Adams County, Mississippi)
Pleasant Lawn (Woodford County, Kentucky)
Potomac Mills (Jefferson County, West Virginia)
Power Farmstead (Sangamon County, Illinois)
Raymond Historic District (Hinds County, Mississippi)
Richmond Terrace Cemeteries (Richmond County, New York)
Richwood Hall (Jefferson County, West Virginia)
Roberts Covered Bridge (Preble County, Ohio)
Covered bridge over Seven Mile Creek in Eaton
Saltsburg Historic District (Indiana County, Pennsylvania)
Samuel Holden House (Somerset County, Maine)
Sardinia Old Town Hall (Erie County, New York)
Sequoyah's Cabin (Sequoyah County, Oklahoma)
Shenandoah County Farm (Shenandoah County, Virginia)
South Hero Inn (Grand Isle County, Vermont)
Stephen G. Bourne House (Grayson County, Virginia)
Thompson Mill (Berks County, Pennsylvania)
Trenton (Cumberland County, Virginia)
Union Church/St. Paul's Church (Litchfield County, Connecticut)
Valleau Tavern (Sullivan County, New York)
Valley Road Historic District (Nassau County, New York)
Van Horn Building (Carroll County, Ohio)
Webster, Daniel, Family Home (Merrimack County, New Hampshire)
West Point Historic District (Hardin County, Kentucky)
Whitney, Capt. Joel, House (Franklin County, Maine)
Williams Frazier Farmstead (Umatilla County, Oregon)
Woodfork (Charlotte County, Virginia)