Built 1863

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Amos Catlin Spafford House (Winnebago County, Illinois)
Archibald D. Fort Hill and Butterfield House (Humphreys County, Tennessee)
Austin Cemetery (Lander County, Nevada)
Bailey Hill Civil War Earthworks (Hinds County, Mississippi)
Bardavon 1869 Opera House (Dutchess County, New York)
The oldest operating theater in New York state.
Barney L. Ford Building (Denver County, Colorado)
Battery A Site, Battle of Helena (Phillips County, Arkansas)
Battery B Site, Battle of Helena (Phillips County, Arkansas)
Battery C Site (Phillips County, Arkansas)
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)
Battle of Tebbs Bend (Taylor County, Kentucky)
Bayou Meto (Reed's Bridge) Battlefield (Pulaski County, Arkansas)
Beaufort National Cemetery (Beaufort County, South Carolina)
Beckwith House Hotel (Green Lake County, Wisconsin)
Former hotel, now repurposed as an apartment building.
Beeson--Foss Ranch (Jackson County, Oregon)
Benjamin Bangs House (Genesee County, Michigan)
Beulah Baptist Church (Alexandria, Virginia)
Big Black River Battlefield (Unspecified county, Mississippi)
Big Creek Schoolhouse (Polk County, Iowa)
Boston Flour Mill (Linn County, Oregon)
Bowers Mansion (Washoe County, Nevada)
Bradford Town Hall (Merrimack County, New Hampshire)
Brighton Heights Reformed Church (Richmond County, New York)
Brinkerhoff-Becker House (Washtenaw County, Michigan)
Buckingham Square District (Hartford County, Connecticut)
Buffington Island (Meigs County, Ohio)
Burr's Ferry Earthworks (Vernon Parish, Louisiana)
Cabin Creek Battlefield (Mayes County, Oklahoma)
Cave Hill National Cemetery (Jefferson County, Kentucky)
Central Vermont Railroad Headquarters (Franklin County, Vermont)
Champion Hill Battlefield (Hinds County, Mississippi)
Christ Church At The Quarry (Knox County, Ohio)
Christ Church, Detroit (Wayne County, Michigan)
Civil War Fort at Boonesboro (Clark County, Kentucky)
Civil War Fortification (Hamilton County, Tennessee)
Clifton (Nassau County, New York)
Colburn School (Middlesex County, Massachusetts)
Cooper-Alley House (Shelby County, Indiana)
Cornwall Furnace (Cherokee County, Alabama)
Supplied iron products to the Confederate States of America during the United States' Civil War.
Corydon Battle Site (Harrison County, Indiana)
Cunningham--Maier House (Scioto County, Ohio)
Cylburn House and Park District (Baltimore, Maryland)
David Smead House (Lake County, Ohio)
Dowe Historic District (Montgomery County, Alabama)
Dr. Don L. Byam House (Madison County, Montana)
Droop Mountain Battlefield (Pocahontas County, West Virginia)
Eagle Rock Ferry (Bonneville County, Idaho)
East Second Street District (Greene County, Ohio)
East Worcester School-Norcross Factory (Worcester County, Massachusetts)
Eisenhower National Historic Site (Adams County, Pennsylvania)
Emmanuel Church (Albemarle County, Virginia)
Engelbert B. Born House (Allegan County, Michigan)
Fairfield Historic District (Adams County, Pennsylvania)
Falley Home (Tippecanoe County, Indiana)
Federal Fortifications Along Bear Creek (Warren County, Mississippi)
Fort Benton (Wayne County, Missouri)
Fort Boreman (Wood County, West Virginia)
Fort Branch Site (Martin County, North Carolina)
Fort C. F. Smith Historic District (Arlington County, Virginia)
Fort Davidson (Iron County, Missouri)
Fort Hayes (Franklin County, Ohio)
Fort Klamath Site (Klamath County, Oregon)
Fort No. 2 at Yellow Bayou (Avoyelles Parish, Louisiana)
Fort No. 5 (Russell County, Alabama)
Fort Pemberton Site (Leflore County, Mississippi)
Fort Pringle (Charleston County, South Carolina)
Fort Sanders Historic District (Knox County, Tennessee)
Fort Scammon (Kanawha County, West Virginia)
Fort Stevens (Clatsop County, Oregon)
Franklin B. Hough House (Lewis County, New York)
Funkstown Historic District (Washington County, Maryland)
George Bryant House (Lorain County, Ohio)
George Tamm Building (Franklin County, Missouri)
Germantown Redoubt (Shelby County, Tennessee)
Gettysburg Battlefield Historic District (Adams County, Pennsylvania)
Gettysburg National Military Park (Adams County, Pennsylvania)
Gilsum Stone Arch Bridge (Cheshire County, New Hampshire)
Stone arch bridge over Ashuelot River on Old NH 10 in Gilsum
Gov. Reuben Fenton Mansion (Chautauqua County, New York)
Greenwold (Kent County, Delaware)
Harold Allan Schoolhouse (Penobscot County, Maine)
Hartford Collegiate Institute (Lyon County, Kansas)
Hazelhurst (Pueblo County, Colorado)
Heinrich Giese House (Hall County, Nebraska)
Helmick Covered Bridge (Coshocton County, Ohio)
Two-span covered bridge over Killbuck Creek on TR 25
Henry W. Grady House (Clarke County, Georgia)
Heywood-Wakefield Company Complex (Worcester County, Massachusetts)
Holy Cross Lutheran Church of Wartburg (Monroe County, Illinois)
Holy Trinity Church Rectory and Convent (McLean County, Illinois)
Honey Springs Battlefield (McIntosh County, Oklahoma)
Horace A. Skinner House (Beaver County, Utah)
Huguenot Schoolhouse (Orange County, New York)
Inscription Rock (Navajo County, Arizona)
Jacob Hamblin House (Washington County, Utah)
Jacob Weber House (Columbia County, Wisconsin)
James Lawrence Kernan Hospital (Unspecified county, Maryland)
James William Beekman House (Nassau County, New York)
Janney Furnace (Calhoun County, Alabama)
John and Margarethe Kemp Cabin (Dane County, Wisconsin)
John Augustus Hockaday House (Callaway County, Missouri)
John Cook Farm (Delaware County, Ohio)
John Doughty House (Atlantic County, New Jersey)
John Franklin Cobb House (Cherokee County, North Carolina)
John Griswold House (Newport County, Rhode Island)
John H. Morgan Surrender Site (Columbiana County, Ohio)
John Harris Mansion (Dauphin County, Pennsylvania)
John Hobson House (Clatsop County, Oregon)
John W. Day House (Lapeer County, Michigan)
John Wells Pratt House (Oswego County, New York)
Johnsonville Historic District (Humphreys County, Tennessee)
Joseph Annin House (Washtenaw County, Michigan)
Joseph-Cherrington House (Franklin County, Ohio)
Judge Thomas Beer House (Crawford County, Ohio)
Kendall Cabinet Shop (Ozaukee County, Wisconsin)
Lake Shore House (Douglas County, Nevada)
Lane-Hooven House (Butler County, Ohio)
Lathrop House (San Mateo County, California)
Lebanon National Cemetery (Marion County, Kentucky)
Lewis H. Thomas House (Montgomery County, Illinois)
Little Egg Harbor Friends Meeting House (Ocean County, New Jersey)
Lloyd and Henry Warehouse (Huntingdon County, Pennsylvania)
Longley Covered Bridge (Franklin County, Vermont)
Covered bridge over Trout River on Longley Bridge Rd (C3004)
Maple Grove Friends Church (Aroostook County, Maine)
Matthew Baird Mansion (Philadelphia County, Pennsylvania)
Matthew Lynch House (Providence County, Rhode Island)
Middle Island Presbyterian Church (Suffolk County, New York)
Missionary Ridge Historic District (Hamilton County, Tennessee)
Monongahela Cemetery (Washington County, Pennsylvania)
Mt. Airy School No. 27 (New Castle County, Delaware)
Mystic Water Works (Middlesex County, Massachusetts)
Nester House (Perry County, Indiana)
Norad Mill (Berkshire County, Massachusetts)
Norfolk Grange Hall (Norfolk County, Massachusetts)
Oil City South Side Historic District (Venango County, Pennsylvania)
Old Synagogue (Dane County, Wisconsin)
Olof Johnson House (Henry County, Illinois)
Oroville Chinese Temple (Butte County, California)
Pardeeville Presbyterian Church (Columbia County, Wisconsin)
Phillip Paul Bliss House (Bradford County, Pennsylvania)
Pipe Spring National Monument (Mohave County, Arizona)
Piper's Opera House (Storey County, Nevada)
Point Douglas-St. Louis River Road Bridge (Washington County, Minnesota)
Port Hudson (East Feliciana Parish, Louisiana)
Port Royal House (Barnstable County, Massachusetts)
Portland High School (Cumberland County, Maine)
Potter--Collyer House (Providence County, Rhode Island)
Prospect Hill Cemetery Building (Albany County, New York)
Providence Presbyterian Church of Bustleton (Burlington County, New Jersey)
Raymond Battlefield Site (Hinds County, Mississippi)
Red Covered Bridge (Bureau County, Illinois)
Covered bridge over Bureau Creek on Old Dad Joe Trail in Princeton
Riverdale Presbyterian Church Complex (Bronx County, New York)
Robert Vinton Beall House (Jackson County, Oregon)
Rolling Fork Mounds (Sharkey County, Mississippi)
Roper's Knob Fortifications (Williamson County, Tennessee)
Roscoe Conkling House (Oneida County, New York)
Royal Mausoleum (Honolulu County, Hawaii)
Saint Paul's Church (Seneca County, New York)
Salem Methodist Church Complex (Hamilton County, Ohio)
Salisbury National Cemetery (Rowan County, North Carolina)
Samuel A. Riggs House (Douglas County, Kansas)
Samuel P. Hoyt House (Summit County, Utah)
Samuel Thompson Dickson House (Fillmore County, Minnesota)
Santa Clara Depot (Santa Clara County, California)
Sears--Ferris House (Carson City, Nevada)
Seppman Mill (Blue Earth County, Minnesota)
Sheep Ranch Fortified House (Malheur County, Oregon)
Shields Woolen Mill (Scott County, Iowa)
Simeon Mills House (Dane County, Wisconsin)
St. James Episcopal Church (Buchanan County, Iowa)
St. John's Episcopal Church (Monroe County, Wisconsin)
St. Joseph's Academy (Ramsey County, Minnesota)
St. Mark's Church (Oneida County, New York)
St. Mary Parish Hall (Erie County, Ohio)
Stager-Beckwith House (Cuyahoga County, Ohio)
STAR OF INDIA (San Diego County, California)
Tenement Building at 97 Orchard Street (New York County, New York)
Topsham Fairgrounds Grandstand (Sagadahoc County, Maine)
Trexler Historic District (Berks County, Pennsylvania)