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Stone description: medium grain
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 9LB23 | United States | Ohio | Sandstone | Marietta |
| 11LA31 | United States | South Dakota | Travertine | Pringle |
| 13LA21 | United States | Iowa | Limestone | Quarry, Marshall Co. |
| 4Lb11 | United States | Tennessee | Limestone | Knoxville |
| 6RA43 | United States | New Hampshire | Gneiss | Petersborough |
| 9RA38 | Spain | tuff | Alamazanon | |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 10LB2 | Portugal | Limestone | Alvito, Coimbra | |
| 8LB1 | Portugal | Marble | Alvrite, Coimbra | |
| 10RA30 | Mexico | Sandstone | Guanajuato State | |
| 10LA39 | Mexico | Sandstone | Guanajuato State | |
| 10rb16 | Argentina | Marble | Unkown |