All - Architectural style - Neoclassical architecture
| 1903 Clinton High School |
| 1915 Taylor County Courthouse |
| 1916 Buffalo High School |
| 1918 State Office Building and 1933 State Highway Building |
| 1938 Clinton High School |
| 20th Century Club |
| 20th Century Club |
| 32nd St. and Lancaster Ave. Philadelphia Armory |
| 42nd Precinct Police Station |
| Abbott, George S., Building |
| Abilene Christian College Administration Building |
| Academy of Medicine |
| Acton High School |
| Actors Temple |
| Adair County Courthouse |
| Adams Apartment Building |
| Adams Building |
| Adams County Courthouse |
| Adams County Courthouse |
| Adams, D. V., Co.-Bussell and Weston |
| Adams-Gray House |
| Adams-Higgins House |
| Adams School |
| Ada Village Hall |
| Adler, David, Estate |
| Ad-Lin Building |
| Administration Building, Indiana Central University |
| Administration Building, University of Central Arkansas |
| Adriance Memorial Library |
| Aetna Hose, Hook and Ladder Company Fire Station No. 2 |
| Agriculture and Manual Arts Building/Platteville State Normal School |
| Agriculture Building |
| Agudas Achim Anshei Sfard Synagogue |
| Ahern, Patrick J., House |
| Ahlstrom, Nils, House |
| Airdrie |
| Aitkin Carnegie Library |
| Alabama City Library |
| Alamance County Courthouse, |
| Alamance Hotel |
| Alameda Free Library |
| Albany Theatre |
| Albergue Caritativo Tricoche |
| Albert Pike Memorial Temple |
| Aldrich Public Library |
| Alexander House |
| Alexandria Hall-Louisiana College |
| Algona Junior and Senior High School Building and High School Building Annex |
| All American Bank Building |
| Alleghany County Courthouse |
| Allegheny Observatory |
| Allendale County Courthouse |
| Allen, I. R., House |
| Allen Parish Courthouse |
| Allen Temple A.M.E. Church |
| Allerdice, Taylor, High School |
| Allmand-Archer House |
| Allsup, Marion, House |
| Alma Fruit Farm |
| Aloah Hotel |
| Alonso, Frank, House |
| Alpine City Hall |
| Altadena Apartments |
| Alta Public Library |
| Altman House |
| American Bank Note Company Building |
| American Institute of Pharmacy Building |
| American National Bank Building |
| American National Red Cross |
| American Security and Trust Company |
| American State Bank |
| Ames High School |
| Amity Lodge No. 335 Temple-Spiritual Israel Church and Its Army Temple |
| Amsterdam City Hall |
| Ancient and Accepted Scottish Rite Temple |
| Anderson Carnegie Memorial Library |
| Anderson County Courthouse |
| Anderson, Judge William Shaw, House |
| Anderson-Smith House |
| Andre Building |
| Annamede |
| Antelope School |
| Antigo Depot |
| Antigo Opera House |
| Antigo Post Office |
| Antiguo Casino Camuyano |
| Antiguo Cuartel Militar Espanol de Ponce |
| Antiguo Hospital Militar Espanol de Ponce |
| Antlers Hotel |
| Apollo Theater |
| Apperson-Iowa Motor Car Company Building |
| Applegate, Charles, House |
| Appling County Courthouse |
| Arcadia Free Public Library |
| Arcanum Apartments |
| Architects Building |
| Arch Street Presbyterian Church |
| Ardmore Carnegie Library |
| Argentine Carnegie Library |
| Arizona Hotel |
Data from United States Park Service and Wikidata
