Ohio - Constructed - 1890–1899
| All Souls Unitarian-Universalist Church |
| Anderson Brothers Department Store |
| Armory-Latisona Building |
| Bedford Baptist Church |
| Boesel, Adolph, House |
| Brumback Library |
| Cary, Freeman Grant, Pleasant Hill Academy |
| City National Bank Building |
| Cleveland Arcade |
| Cook, George E., House |
| Engine House No. 6 |
| First Concrete Street In U.S. |
| First Methodist Episcopal Church |
| Five Oaks |
| Fort Piqua Hotel |
| Franklin Park Conservatory |
| Garfield, President James A., Memorial |
| Hartman Hotel |
| Kirker Covered Bridge |
| Lake Shore And Michigan Southern Railroad Depot |
| MacDonell House |
| Memorial Hall |
| Morris, C. E., House |
| Municipal Building |
| Ohio Institution for the Education of the Deaf and Dumb |
| Old Akron Post Office |
| Plaza Hotel |
| Portsmouth Fire Department No. 1 |
| Prentiss, Frederick, House |
| Prentiss-Tulford House |
| Rankin Building |
| Sacred Heart of Jesus Churches |
| Saint John the Evangelist Catholic Church Complex |
| Scofield-Sanor House |
| Smith, William R., House |
| Society for Savings Building |
| South Bass Island Light |
| Spitzer Building |
| St. Joseph Catholic Church and School |
| St. Patrick's Catholic Church |
| Tannehill, Capt. James Boggs, House |
| Thurston Building |
| Trumbull County Courthouse |
| Underwriters Salvage Corps |
| Williams County Courthouse |
| Wyandotte Building |
Data from United States Park Service and Wikidata
