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Stone description: medium grain
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 13RA41 | United States | Kentucky | Limestone | Princeton |
| 1R13 | United States | Colorado | Marble | Marble |
| 5LA23 | United States | North Carolina | Granite | Davidson College |
| 7LA44 | United States | Michigan | Sandstone | Marquette |
| 8RB17 | United States | Pennsylvania | Limestone | Mertztown |
| 9RA38 | Spain | tuff | Alamazanon | |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 8LB1 | Portugal | Marble | Alvrite, Coimbra | |
| 10LB2 | Portugal | Limestone | Alvito, Coimbra | |
| 10LA39 | Mexico | Sandstone | Guanajuato State | |
| 10RA30 | Mexico | Sandstone | Guanajuato State | |
| 10rb16 | Argentina | Marble | Unkown |