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Stone description: Potsdam
| Wall Number Sort descending | Country | State | Classification | Source |
|---|---|---|---|---|
| 6RB13 | United States | Pennsylvania | Conglomerate | Friedensburg |
| 7LB43 | United States | Michigan | Sandstone | L'Anse |
| 7LB45 | United States | Michigan | Sandstone | L'Anse |
| 7RA42 | United States | Michigan | Sandstone | Marquette |
| 8RA44 | United States | Michigan | Sandstone | L'Anse |
| 8RB44 | United States | Michigan | Sandstone | Isle Royale |
| 9Lb35 | United States | South Dakota | Quartzite | Sioux Falls |
| 9RB43 | Canada | Sandstone | Nepigon Bay, Ontario |