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Stone description: Lower carboniferous
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 9LA41 | United States | Illinois | Sandstone | Chester |
| 13LA43 | United States | Kentucky | Limestone | Grahampton |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 5LA16 | United States | Ohio | Sandstone | Windsor |
| 9LA42 | United States | Illinois | Sandstone | Chester |
| 13LB20 | United States | Iowa | Limestone | Mt. Pleasant |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 5La17 | United States | Ohio | Sandstone | Wooster |
| 9LB11 | United States | Iowa | Limestone | Durham Sta. Marion Co. |
| 13LB45 | United States | Kentucky | Limestone | Green Co. |
| 6RA20 | United States | Ohio | Sandstone | Lancaster |
| 10LA20 | United States | Iowa | Limestone | Iowa Falls |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 9LB14 | United States | Iowa | Limestone | Fairfield |
| 13RA13 | United States | Iowa | Dolomite | Humbolt |
| 6RA21 | United States | Ohio | Sandstone | Ridgeville |
| 10La21 | United States | Missouri | Limestone | Springfield |
| 5LA19 | United States | Ohio | Sandstone | Mt. Gilead |
| 9LB21 | United States | Ohio | Sandstone | Twinsburg |
| 13RA15 | United States | Iowa | Dolomite | Ames Station Story Co. |
| 6RB20 | United States | Ohio | Sandstone | Amherst |
| 10LB20 | United States | Ohio | Sandstone | Lancaster |
| 5La2 | United States | Ohio | Sandstone | Norwalk |
| 9LB22 | United States | Ohio | Sandstone | Mansfield |
| 13RA20 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 6RB39 | United States | Ohio | Sandstone | Sunbury |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 9LB40 | United States | Indiana | Sandstone | French Lick Twp. |
| 13RA41 | United States | Kentucky | Limestone | Princeton |
| 7Lb19 | United States | Ohio | Sandstone | Portsmouth |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 5LA4 | United States | Ohio | Sandstone | Norwalk |
| 9RA10 | United States | Iowa | Limestone | Ottumwa |
| 13RA42 | United States | Kentucky | Limestone | Princeton |
| 7RA14 | United States | Pennsylvania | Limestone | Connellsville |
| 11LB15 | United States | Missouri | Dolomite | Sedalia |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 9RA11 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 13RB39 | United States | Illinois | Limestone | Columbia |
| 7RA20 | United States | Ohio | Sandstone | Elyria |