All - Constructed - 1920–1929
| Architects Building |
| Archwood Congregational Church |
| Arco Baptist Community Church |
| Argos Izaak Walton League Historic District |
| Arizona Bank and Trust |
| Arkansas Highway 57 Bridge |
| Arlington Apartments |
| Arlington Park |
| Arlington Reservoir |
| Armour and Jacobson Building |
| Armour Creameries Poultry House |
| Armstrong Tunnel |
| Arndt, Rufus, House |
| Arrow Hotel |
| Art Annex |
| Art's Auto |
| Arvondor Apartments |
| Ashby Apartments |
| Asheville City Hall |
| Asheville High School |
| Ashland County Courthouse |
| Ashley River Road |
| Assumption of the Blessed Virgin Mary Church Complex |
| Astor Building |
| Astoria Column |
| Astoria Victory Monument |
| Astor, John Jacob, Hotel |
| Atchison, Topeka, and Santa Fe Railroad Station |
| Atchison, Topeka, and Santa Fe Railway Steam Locomotive No. 3751 |
| Atkinson, Edmund, School |
| Atlantic Bank and Trust Company Building |
| Atlantic City Convention Hall |
| AT & SF Locomotive |
| Attucks, Crispus, High School |
| Auburndale City Hall |
| Auto Freight Transport Building of Oregon and Washington |
| Auto Hotel Building |
| Autzen, Thomas J., House |
| Avalon |
| Avelan Apartments |
| Ayres Hall |
| Azalea Court Apartments |
| Aztec Hotel |
| Aztec Ruins National Monument |
| Baber, Dr. Calvin M., House |
| Bad Route Creek Bridge |
| Bagdad Theatre |
| BAGHEERA (schooner) |
| Bailey Buildings |
| Bailey, W. T., House |
| Baird House |
| Baker Hotel |
| Balaban and Katz Chicago Theatre |
| Balboa Inn |
| Balboa Theatre |
| Bald Peak Colony Club |
| Baldwin Piano Company Building |
| Ball-Ehrman House |
| Banco Credito y Ahorro Ponceno |
| Banco de Ponce |
| Bank of Buffalo County |
| Bank of Italy |
| Bank of Italy |
| Bank of Napa |
| Bank of Tracy |
| Banton, Dr. B. M., House |
| Barber, Aaron, Memorial Building |
| Barberville Central High School |
| Barbizon Hotel for Women |
| Bar Building |
| Barlum Tower |
| Barnhart Apartments |
| Barnsdall, Aline, Complex |
| Bass Harbor Memorial Library |
| Bates Round Barn |
| Baton Rouge High School |
| Battery Park Hotel |
| Battleship Maine Monument |
| Baumann, Jane and Gustave, House and Studio |
| Bay Haven School |
| Beach Chalet |
| Beacon Theater and Hotel |
| Beall Park Community Center |
| Beamer Barn |
| Beardsley Park |
| Bearwallow Mountain Lookout Cabins and Shed |
| Beaty School |
| Beaver Meadow School |
| Becker, A. G., Property |
| Beimer, Bernard J., House |
| Belchertown State School |
| Belleview School |
| Bell, R.H. and Jessie, House |
| Bellview School |
| Belmont Hotel |
| Belmont School |
| Benjamin Apartments |
| Benjamin Franklin Hotel |
| Benjamin, Judah P., Memorial |
| Benson Block |
Data from United States Park Service and Wikidata
