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Stone description: Lower carboniferous
| Wall Number | Country | State | Classification | Source Sort descending |
|---|---|---|---|---|
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 9LA40 | United States | Illinois | Sandstone | Pinckneyville |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 7Lb19 | United States | Ohio | Sandstone | Portsmouth |
| 8LA20 | United States | Ohio | Sandstone | Portsmouth |
| 13RA41 | United States | Kentucky | Limestone | Princeton |
| 13RA42 | United States | Kentucky | Limestone | Princeton |
| 14Lb46 | United States | Kentucky | Limestone | Princeton |
| 8RA15 | United States | Indiana | Limestone | Putnamville |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 13LA21 | United States | Iowa | Limestone | Quarry, Marshall Co. |
| 13LA42 | United States | Illinois | Limestone | Quincy |
| 6RA21 | United States | Ohio | Sandstone | Ridgeville |
| 12LB36 | United States | Indiana | Limestone | Salem |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 14RA3 | United States | Illinois | Dolomite | Saline |
| 11LB15 | United States | Missouri | Dolomite | Sedalia |
| 13RA20 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 9RA11 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 12LA35 | United States | Indiana | Limestone | Spencer |
| 12RA33 | United States | Indiana | Limestone | Spencer |
| 10La21 | United States | Missouri | Limestone | Springfield |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 11RA21 | United States | Missouri | Limestone | St. Louis |
| 12LB21 | United States | Missouri | Limestone | St. Louis |
| 12RB14 | United States | Missouri | Dolomite | St. Louis |
| 6RB39 | United States | Ohio | Sandstone | Sunbury |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 9RA9 | United States | Iowa | Limestone | Tracey Station, Marion Co. |
| 9LB21 | United States | Ohio | Sandstone | Twinsburg |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 14RA21 | United States | Iowa | Limestone | Washington |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 5LA16 | United States | Ohio | Sandstone | Windsor |
| 14RA22 | United States | Iowa | Limestone | Winterset |
| 14RB20 | United States | Iowa | Limestone | Winterset |
| 5La17 | United States | Ohio | Sandstone | Wooster |