Built 1873

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Abner C. Johnson House (Genesee County, Michigan)
Abner L. Harris House (Sauk County, Wisconsin)
French Second Empire House with Mansard Roof Disguising a Third Story
Adams County Courthouse (Adams County, Indiana)
Adas Israel Synagogue (Washington, District of Columbia)
Albina (Multnomah County, Oregon)
Former city annexed to Portland in 1891
All Saints' Episcopal Church (Allegan County, Michigan)
Alligator Reef Light (Monroe County, Florida)
Alois and Annie Weber House (Lee County, Iowa)
Amos Kelly House (Crawford County, Pennsylvania)
Anderson Schoolhouse (Ashland County, Ohio)
Andrew-Ryan House (Dubuque County, Iowa)
Andrews Methodist Church (Taylor County, West Virginia)
Apex Historic District (Wake County, North Carolina)
Ashland Cemetery (Jackson County, Oregon)
Atkins and Smith House (Beaver County, Utah)
Atkinson Road Bridge (Bucks County, Pennsylvania)
Stone arch bridge over Pidcock Creek on Atkinson Road in Solebury Twp, East of Lahaska, PA. Bucks County Bridge # 305, PA
Au Sable Light Station (Alger County, Michigan)
Augustus Garland House (Pulaski County, Arkansas)
Augustus Paddock House (Kent County, Michigan)
Auraria 9th Street Historic District (Denver County, Colorado)
Bangor Elevator (Van Buren County, Michigan)
Restored Grain Elevator Now a Public Venue/Rental Hall
Barker Mill (Androscoggin County, Maine)
Bassett and Bassett Banking House (Washington County, Texas)
Beach, Merritt, & Son Building (Litchfield County, Connecticut)
Bear Springs Iron Furnace (Stewart County, Tennessee)
Beekman Furnace (Dutchess County, New York)
Ruins of Clove Valley Iron Works Furnace #2
Belmont Historic District (Gaston County, North Carolina)
Benjamin Ellsworth House (Winona County, Minnesota)
Benton House (Marion County, Indiana)
Bethalto Village Hall (Madison County, Illinois)
Bethel Methodist Episcopal Church (Guernsey County, Ohio)
Bethel Presbyterian Church (York County, South Carolina)
Bigelow Covered Bridge (Union County, Ohio)
Boston Finishing Works (Berkshire County, Massachusetts)
Brandhagen Houses (Bosque County, Texas)
Brooks Family Farm (Banks County, Georgia)
Brown's Hall-Thompson's Opera House (Lincoln County, Nevada)
Browning House (Gibson County, Tennessee)
Buchanan County Courthouse and Jail (Buchanan County, Missouri)
Bull Durham Tobacco Factory (Durham County, North Carolina)
Burton Brook Bridge (Litchfield County, Connecticut)
Butchertown Historic District (Jefferson County, Kentucky)
C. T. Hayden House (Maricopa County, Arizona)
Caledonia Bowstring Bridge (Marion County, Ohio)
Callie Furnace (Botetourt County, Virginia)
Canby's Cross (Siskiyou County, California)
Modoc Indian War battle site
Capt. William McGilvery House (Waldo County, Maine)
Captain Jack's Stronghold (Siskiyou County, California)
Carpenter Bridge (Bristol County, Massachusetts)
Carpenter Street over the West Branch Palmer River
Cavalry Corrals (Pima County, Arizona)
Cedar Grove Cemetery (Jefferson County, New York)
Central Colored School (Jefferson County, Kentucky)
Central Railroad of New Jersey Bethlehem Station (Northampton County, Pennsylvania)
Disused railroad depots, passenger & freight, restored for commercial use.
Charles H. Helm House (Franklin County, Missouri)
Charles Koester House (Marshall County, Kansas)
Charter Oak Schoolhouse (Randolph County, Illinois)
Chase County Courthouse (Chase County, Kansas)
Chesterfield and Lancaster Railroad (Chesterfield County, South Carolina)
Little known railroad has been gone for more than 70 years
Chicago and Northwestern Depot (Cook County, Illinois)
Christian Moerlein Brewery (Hamilton County, Ohio)
Former Over-The-Rhine brewery in Cincinnati, Ohio
Church Green Buildings Historic District (Suffolk County, Massachusetts)
Church of Our Savior (Tishomingo County, Mississippi)
Cincinnati Observatory Building (Hamilton County, Ohio)
Clay County Courthouse (Clay County, Tennessee)
Codman Building (Suffolk County, Massachusetts)
Coeymans School (Albany County, New York)
Coldwater Church of the Brethren (Butler County, Iowa)
Column Segments of the Old Capitol (Marion County, Oregon)
Comstock Covered Bridge (Middlesex County, Connecticut)
One of three remaining covered bridges in Connecticut
Cordts Mansion (Ulster County, New York)
Coshocton County Courthouse (Coshocton County, Ohio)
Croco House (Holmes County, Ohio)
Cuero Commercial Historic District (DeWitt County, Texas)
Currituck Beach Lighthouse (Currituck County, North Carolina)
D. G. Yuengling and Son Brewing Complex (Schuylkill County, Pennsylvania)
Dahm House (Mobile County, Alabama)
DANIEL LYONS (Shipwreck) (Kewaunee County, Wisconsin)
Daughters of Zion Cemetery (Charlottesville, Virginia)
David Farragut School (Philadelphia County, Pennsylvania)
Deady Hall (Lane County, Oregon)
Denby House (Mobile County, Alabama)
Des Peres School (St. Louis, Missouri)
District 13 Police Station (Suffolk County, Massachusetts)
Dodge Building (Essex County, Massachusetts)
Dr. Urban Owen House (Williamson County, Tennessee)
East Brother Island Light Station (Contra Costa County, California)
Eliot Congregational Church (Suffolk County, Massachusetts)
Elm City Municipal Historic District (Wilson County, North Carolina)
Ely Block (Lorain County, Ohio)
Emanuel Lutheran Church of Montra (Shelby County, Ohio)
Wood Frame Rural Church
Estey Hall (Wake County, North Carolina)
Eugene Covered Bridge (Vermillion County, Indiana)
Covered bridge over Big Vermillion River on CR 40 West
Evangelical Baptist Church (Middlesex County, Massachusetts)
Evansville Post Office (Vanderburgh County, Indiana)
Evergreen Hill (St. Joseph County, Indiana)
Fabrishous and Sarah A. Thomas House (Chariton County, Missouri)
Fairbury Commercial Historic District (Jefferson County, Nebraska)
Fairfax Public School (Fairfax, Virginia)
Fall River Waterworks (Bristol County, Massachusetts)
Fayetteville Confederate Cemetery (Washington County, Arkansas)
First Baptist Church of Wollaston (Norfolk County, Massachusetts)
First Congregational Church (Bourbon County, Kansas)
First Presbyterian Church of Oyster Bay (Nassau County, New York)
Fort Laramie Three-Mile Hog Ranch (Goshen County, Wyoming)
Fort Robinson and Red Cloud Agency (Unspecified county, Nebraska)
Frederick A. E. Meyer House (Salt Lake County, Utah)
Fremont Mill Bridge (Jones County, Iowa)
Gallie's Hall and Buildings (Leon County, Florida)
Garrard County Jail (Garrard County, Kentucky)
George E. Goodman Mansion (Napa County, California)
George Louk Farm (Livingston County, Michigan)
George Miller House (Oldham County, Kentucky)
George W. Bethers House (Benton County, Oregon)
Gilbert House (Madison County, Montana)
Gilliece Bridge (Winneshiek County, Iowa)
Bowstring through truss bridge over Upper Iowa River on Cattle Creek Road
Grace Episcopal Church (McCracken County, Kentucky)
Graham House (Kent County, Michigan)
Gregory House (Huron County, Ohio)
Grosse Point Light Station (Cook County, Illinois)
Guinston United Presbyterian Church (York County, Pennsylvania)
H. S. Barney Building (Schenectady County, New York)
Hadfield Company Lime Kilns (Waukesha County, Wisconsin)
Hale House (Washington County, Rhode Island)
Hamilton Masonic Lodge (Loudoun County, Virginia)
Hamilton Primary School (Jersey County, Illinois)
Hardware Building (Fayette County, Iowa)
Harpersfield Covered Bridge (Ashtabula County, Ohio)
Two-span covered bridge with steel through truss approach over Grand River on Harpersfield Road
Hart House (Orleans Parish, Louisiana)
Henry J. Buhr House (Franklin County, Missouri)
Herkimer County Courthouse (Herkimer County, New York)
Hill's Sawmill (Wayne County, Pennsylvania)
Hoffner Historic District (Hamilton County, Ohio)
Holden Town Hall (Penobscot County, Maine)
Holden-Roberts Farm (Orange County, North Carolina)
Holy Innocents' Episcopal Church (Panola County, Mississippi)
Holy Sepulchre Cemetery (Douglas County, Nebraska)
Holy Trinity Church (Humboldt County, California)
Hopewell Depot (Dutchess County, New York)
Restored railroad depot now a museum
Horace Mann Public School No. 13 (Marion County, Indiana)
Hospital Rock Army Camp Site (Siskiyou County, California)
House at 16 Mineral Street (Middlesex County, Massachusetts)
House at 230 Winchester Street (Middlesex County, Massachusetts)
House of Providence (Clark County, Washington)
Howe Flume Historic District (Summit County, Utah)
Howells, William Dean, House (Middlesex County, Massachusetts)
Hoxeng Farmstead (Yankton County, South Dakota)
Immanuel Presbyterian Church (Milwaukee County, Wisconsin)
Victorian Gothic Style church designed by Edward Townsend Mix
Isaac Bonham House (Warren County, Mississippi)
J. H. Bekken House (Bosque County, Texas)
J. P. Schneider Store (Travis County, Texas)
Jacob H. Henry House (Will County, Illinois)
James C. Purnell House (Montgomery County, Mississippi)
James Culbertson Reynolds House (White County, Indiana)
A large, two-story, Italianate style brick house
James N. Carlile House (Pueblo County, Colorado)
James Thurber House (Franklin County, Ohio)
Jim Baker Cabin (Carbon County, Wyoming)
Joe Jung House (Bastrop County, Texas)
John A. Butterfield House (Amador County, California)
John George Ott House (Dane County, Wisconsin)
John Henry Weston House (Hamilton County, Ohio)
John Meyer House (Franklin County, Missouri)
John Sr. Kennel Farm (Butler County, Ohio)
John Wesley Mann House (McLennan County, Texas)
Johnson-Tate Cottage (Panola County, Mississippi)
Jordan House (Leake County, Mississippi)
Joseph P. Winston House (Richmond, Virginia)
Joseph Stoneman House (Cuyahoga County, Ohio)
Judge Augustus C. Palmer House (Napa County, California)
Julian--Clark House (Marion County, Indiana)
Kable House (Staunton, Virginia)
Kankakee Slack Water Canal @ Wilmington, IL (Will County, Illinois)
Canal to connect Kankakee River to Illinois-Michigan Canal
Kaw Indian Agency (Kay County, Oklahoma)
Kent's Hill School Historic District (Kennebec County, Maine)
Kern Bridge (Blue Earth County, Minnesota)
Kernersville Depot (Forsyth County, North Carolina)
Kewaunee County Courthouse (Kewaunee County, Wisconsin)
Built in 1873, additions built in 1902, 1938
Kintner House Hotel (Harrison County, Indiana)
Kitzmeyer Furniture Factory (Carson City, Nevada)
Knecht's Mill Covered Bridge (Bucks County, Pennsylvania)
Knight's Foundry and Shops (Amador County, California)