All - Architectural style - Prairie School architecture
| 20th Century Club |
| Ackers, William and Mary, House |
| Adair, Dr. John H., House |
| Adams, Mary W., House |
| Administration Building |
| Akin, Mrs. Henry F., House |
| Albaugh, Morton, House |
| Albion Flats |
| Alexander-Campbell House |
| Allen, Henry J., House |
| Alton Chapter House |
| American Cash Apartments-American Cash Store |
| American Women's League Chapter House |
| Amustutz Apartments |
| Andover Chapter House |
| Andrus, A. J., Duplex |
| Annawan Chapter House |
| Arrow Hotel |
| Arvondor Apartments |
| Aurora Elks Lodge No. 705 |
| Bach, Emil, House |
| Badger Building |
| Baker, Frank J., House |
| Baldwin, Hiram, House |
| Barnhart Apartments |
| Barrett, Martin, House |
| Beal-Burrow Dry Goods Building |
| Becker, A. G., Property |
| Becker, Gustav, House |
| Beebe, Dr. Ward, House |
| Belvidere High School |
| Bennes, John Virginius and Annice, House |
| Bersbach, Alfred, House |
| Beulah School |
| Birdwell, T. Hamp and Beulah, House |
| Bismarck Tribune Building |
| Black River Falls Public Library |
| Blanton, Thomas L., House |
| Blinn, Edmund, House |
| Boehmler, H. E., House |
| Bogk, Frederick C., House |
| Bottoms House |
| Bowman, F. E., Apartments |
| Bowman House |
| Bradford-Pettis House |
| Bradley, B. Harley, House and Stable |
| Bradley, Harold C., House |
| Brenizer Library |
| Brigham City Carnegie Library |
| Brigham, Edmund D., House |
| Bright-Thompson-Lewis House |
| Brittain-Garvin House |
| Browning Apartments |
| Bunkley, Dr. E. P., House and Garage |
| Burford, R. F. and Lena, House |
| Burgess, Frank, House |
| Burlington Railroad Depot |
| Burnett, Edgar A., House |
| Burnham, John and Isabel, House |
| Burnham-Marston House |
| Burrus-Finch House |
| Bush-Dubisson House |
| Butts, Thomas V., House |
| Campbell House |
| Canton High School |
| Canton Township Carnegie Library |
| Carlinville Chapter House |
| Carmi Chapter House |
| Carnegie Library |
| Carnegie Library Building |
| Carpenter, Joseph, House |
| Carter, Frederick B., Jr., House |
| Carter, W. T., Jr., House |
| Casa Roig |
| Cash, W. A. V., House |
| Cavanagh, Joseph A., House |
| C B & Q Passenger Depot |
| Cedar Fort School |
| Cement City Historic District |
| Central Court Historic District |
| Charles Mix County Courthouse |
| Chase, Charles F. and and Ruth, House |
| Chatfield Public Library |
| Chicago, Milwaukee, St. Paul and Pacific Railroad Depot |
| Chicago, St. Paul, Minneapolis and Omaha Railroad Passsenger Station |
| Churchill Public School |
| Church of St. Bernard-Catholic |
| City Hall and Auditorium |
| City Market |
| City National Bank Building |
| Clack House |
| Clarke, James F., House |
| Clifford, John D., House |
| Clifton, John, House |
| Cluever, Richard, House |
| Coffeen, William and Helen, House |
| Collins, William, House |
| Columbus Downtown Historic District |
| Columbus Fireman's Park Complex |
| Columbus Public Library |
Data from United States Park Service and Wikidata
