Built during 1900s

145th Street Subway Station (IRT) (New York County, New York)
168th Street Subway Station (IRT) (New York County, New York)
181st Street Subway Station (IRT) (New York County, New York)
1903 Clinton High School (East Feliciana Parish, Louisiana)
1908 Clovis City Hall and Fire Station (Curry County, New Mexico)
201-211 Jules Street (Buchanan County, Missouri)
This seven story grey brick building is located at 201-211 Jules Street
28th Street Subway Station (IRT) (New York County, New York)
302 N. Third Street (Buchanan County, Missouri)
This seven story brick and stone building is located at 302 N. Third Street.
33rd Street Subway Station (IRT) (New York County, New York)
402-408 N. Third Street (Buchanan County, Missouri)
This six story red brick building is located at 402-408 N. Third Street
48th Police Precinct Station (Bronx County, New York)
69th Regiment Armory (New York County, New York)
72nd Street Subway Station (IRT) (New York County, New York)
79th Street Subway Station (IRT) (New York County, New York)
915 E. Pierce Street/Grand Pyramid House (Maricopa County, Arizona)
A. B. Seelye House (Dickinson County, Kansas)
A. C. Freeman House (Charlotte County, Florida)
A. C. Gilruth House (Codington County, South Dakota)
A. C. Trumbo House (Muskogee County, Oklahoma)
A. E. Howard House (Yakima County, Washington)
A. F. Cappelli Block (Providence County, Rhode Island)
A. F. Dantzler House (Jackson County, Mississippi)
A. F. R. Building (Bannock County, Idaho)
A. G. Long House (Multnomah County, Oregon)
A. H. Halff House (Bexar County, Texas)
A. H. Stewart House (Canyon County, Idaho)
A. J. Hazeltine House (Warren County, Pennsylvania)
A. J. Jackson House (Jones County, Texas)
A. J. Sherwood House (Coos County, Oregon)
A. J. Stephens House (Lucas County, Iowa)
A. J. Swenson House (Jones County, Texas)
A. K. Steunenberg House (Canyon County, Idaho)
A. M. McNair House (Darlington County, South Carolina)
A. Mendelson and Son Company Building (Albany County, New York)
A. Nanbu Hotel--Holy's Bakery (Hawaii County, Hawaii)
A. O. Huntley Barn (Adams County, Idaho)
A. P. Terry House (Chatham County, North Carolina)
A. R. Carroll Building (Washington County, Arkansas)
A. S. Bradford House (Orange County, California)
A. T. Harris House (Woodford County, Kentucky)
A. T. Ranch Headquarters (Wheeler County, Nebraska)
A. W. Gridley House (Kane County, Illinois)
Frank Lloyd Wright designed house, now a private residence.
A. W. Patterson House (Muskogee County, Oklahoma)
A.A. Salazar House (Costilla County, Colorado)
A.B. and Son Hudelson Building (Union County, Oregon)
A.B. Ming House (Yuma County, Arizona)
A.E. Moreton Jr. House (Lincoln County, Mississippi)
A.P. Johnson House (Walworth County, Wisconsin)
A.Z. Palmer House (Navajo County, Arizona)
Aage and Kristine Larsen Homestead (Sheridan County, Montana)
Abba R. Holman Block (Salt Lake County, Utah)
Abbeville County Courthouse (Abbeville County, South Carolina)
Abbeville Opera House (Abbeville County, South Carolina)
Historic government building & theater in Abbeville, SC
Abbott Graves House (York County, Maine)
Abe Jones House (Oconee County, Georgia)
Abigail Vare School (Philadelphia County, Pennsylvania)
Abraham and Carrie Erb House (Yellowstone County, Montana)
Abraham Lafkowitz House (Muscogee County, Georgia)
Abraham Lincoln Statue (Larue County, Kentucky)
Abraham Lincoln Statue and Park (Fayette County, Iowa)
A unique statue of Abraham Lincoln is the centerpiece of a town park
Abraham Lowenstein House (Shelby County, Tennessee)
Abraham Russell Ponder House (Cape Girardeau County, Missouri)
Abrams House (Pulaski County, Arkansas)
Academia Pomeroy Covered Bridge (Juniata County, Pennsylvania)
Covered bridge over Tuscarora Creek southeast of Academia
Academy of Music (Lynchburg, Virginia)
Acme-McCrary Hosiery Mills (Randolph County, North Carolina)
Acting Superintendent's Headquarters (Mariposa County, California)
Ada Odd Fellows Temple (Ada County, Idaho)
Ada Thompson Memorial Home (Pulaski County, Arkansas)
Ada Village Hall (Norman County, Minnesota)
Adam and Minnie Royhl House (Kingsbury County, South Dakota)
Adam Gautier House (Jackson County, Mississippi)
Adams and Sickles Building (Mercer County, New Jersey)
Adams Avenue Bridge in Philadelphia (Philadelphia County, Pennsylvania)
Adams Building (Vermilion County, Illinois)
Adams County Courthouse (Adams County, Colorado)
Adams Hotel (Golden Valley County, Montana)
Adams House (Franklin County, Georgia)
Adams Memorial Building (Rockingham County, New Hampshire)
Adams, D.V., Co.--Bussell and Weston (Kennebec County, Maine)
Adams--Fairview Bonanza Farm (Richland County, North Dakota)
Adams-Leslie House (Bradley County, Arkansas)
Adams-Matheson House (Hart County, Georgia)
Adath Israel Temple (Jefferson County, Kentucky)
Aday--Stephenson House (Searcy County, Arkansas)
Addison Lord House (Lorain County, Ohio)
Addison Village Hall (Steuben County, New York)
Adelaide L. T. Douglas House (New York County, New York)
Adena Court Apartments (Muskingum County, Ohio)
Adin Supply Company (Modoc County, California)
Adluh Flour (Richland County, South Carolina)
A historic building still in operation
Administration Building, Sherman Institute (Riverside County, California)
Administration/Science Building (Maricopa County, Arizona)
ADMIRAL DEWEY (tugboat) (New York County, New York)
Adolph H. Kayser House (Dane County, Wisconsin)
Adolph Lomb House (Monroe County, New York)
Adolph O. Eberhart House (Blue Earth County, Minnesota)
Adrian Barela House (Bernalillo County, New Mexico)
Adrian Public Library (Lenawee County, Michigan)
Aerial Lift Bridge (St. Louis County, Minnesota)
Vertical-lift through truss bridge over the Duluth Ship Canal on Lake Avenue in Duluth
Afro-American Insurance Company Building (York County, South Carolina)
Aftermath Clubhouse (Whatcom County, Washington)
Ag Hill Complex (Centre County, Pennsylvania)
Agee House (Jefferson County, Alabama)
Aggergaard Manor (Yankton County, South Dakota)
Aggie Theater (Larimer County, Colorado)
Agnes M. Tamblyn House (Nez Perce County, Idaho)
Agnews Insane Asylum (Santa Clara County, California)
Agricultural Engineering Building (Dane County, Wisconsin)
Agricultural Heating station (Dane County, Wisconsin)
Agriculture Building (Ingham County, Michigan)
Academic Building on Michigan State University North Campus
Agriculture Hall (Dane County, Wisconsin)
Aiken's Hotel (Ada County, Idaho)
Air Science (Dona Ana County, New Mexico)
Akin Free Library (Dutchess County, New York)
Akron Public Library (Summit County, Ohio)
Beaux Arts style Carnegie Library until 1980, now a private office building
Alabama City Library (Etowah County, Alabama)
Alameda Free Library (Alameda County, California)
Alamo National Bank Building (Bexar County, Texas)
Alaska Central Railroad: Tunnel No. 1 (Kenai Peninsula Borough, Alaska)
Alaska Steam Laundry (Juneau Borough, Alaska)
Alaska Trade Building (King County, Washington)
Albany Carnegie Public Library (Gentry County, Missouri)
Albany District Pecan Growers' Exchange (Dougherty County, Georgia)
Albany Felt Company Complex (Albany County, New York)
Albany Institute of History and Art (Albany County, New York)
Albers Brothers Milling Company (Multnomah County, Oregon)
Albert and Lina Stenger House (Platte County, Nebraska)
Albert and Theresa Marx House (Monroe County, Wisconsin)
Albert Beck House (Ada County, Idaho)
Albert Carlton Estate (Hardee County, Florida)
Albert Cofta Farmstead (Summit County, Ohio)
Albert F. Madlener House (Cook County, Illinois)
Albert Gallatin Blakey House (Cooper County, Missouri)
Albert Kahn House (Wayne County, Michigan)
Albert Lea City Hall (Freeborn County, Minnesota)
Albert R. Beardsley House (Elkhart County, Indiana)
Albert S. Sholes House (Washington County, Oregon)
Albert Watkins House (Lancaster County, Nebraska)
Alberts Chapel (Calhoun County, West Virginia)
Albertville Roller Mill (Wright County, Minnesota)
Albrecht C. Ringling House (Sauk County, Wisconsin)
Albright Bridge (Hamilton County, Iowa)
Albright-Dukes House (Laurens County, South Carolina)
Albright-Knox Art Gallery (Erie County, New York)
Alchesay Canyon Bridge (Maricopa County, Arizona)
Concrete arch bridge over Alchesay Canyon on AZ 88
Alden and Thomasene Howell House (Haywood County, North Carolina)
Alden House (Benton County, Arkansas)
Alden, Arthur, House (Norfolk County, Massachusetts)
Aldworth Manor (Cheshire County, New Hampshire)
Alesia (Lafayette Parish, Louisiana)
Alewife Brook Parkway (Middlesex County, Massachusetts)
Alex and Mary Alice Johnson House (Tooele County, Utah)
Alex Brown Building (Baltimore, Maryland)
Alex Seitaniemi Housebarn (St. Louis County, Minnesota)
Alexander and Busey Houses (Flathead County, Montana)
Alexander City Commercial Historic District (Tallapoosa County, Alabama)
Alexander Dallas Bache School (Philadelphia County, Pennsylvania)
Alexander Daue House (Marion County, Oregon)
Alexander Hogg School (Tarrant County, Texas)
Alexander Hoover House (Butte County, South Dakota)
Alexander House (Spartanburg County, South Carolina)
Historic home in Spartanburg, SC
Alexander House (Chaffee County, Colorado)
Alexander MacKinnon House (Iron County, Michigan)
Alexander Young Building (Honolulu County, Hawaii)
Alexander--Campbell House (Taylor County, Texas)
Alexandra (Marion County, Indiana)
Alexandra, The (Hamilton County, Ohio)
Alexandria Hotel and Annex (Napa County, California)
Alexandria Public Library (Douglas County, Minnesota)
Alexandria Public Library, Old (Rapides Parish, Louisiana)
Alexandria Union Station (Alexandria, Virginia)
Alfred and Rosy Skinner House (Utah County, Utah)
Alfred E. Smith House (New York County, New York)
Alfred Griffin House (Yuma County, Arizona)
Alfred H. and Sarah Frahm House (Washington County, Nebraska)
Alfred Haines House (San Diego County, California)
Alfred Hanson House (Fayette County, Iowa)
Alfred Hocking House (Honolulu County, Hawaii)
Alfred L. Black House (Whatcom County, Washington)
Alfred Phillips House (Ford County, Illinois)
Alfred Toll House (Jackson County, Missouri)