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Stone description: Lower Silurian
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 14RB15 | United States | Iowa | Dolomite | Dubuque |
| 9Lb7 | United States | Vermont | Marble | Southerland Falls |
| 12La19 | United States | Vermont | Marble | Center Rutland |
| 13RB21 | United States | Vermont | Marble | Center Rutland |
| 7RA15 | United States | Pennsylvania | Limestone | Lebanon |
| 10RA10 | United States | New York | Limestone | Prescott |
| 13LA18 | United States | Vermont | Marble | Rutland |
| 14RB19 | United States | Vermont | Marble | Pittsford |
| 9Lb8 | United States | Vermont | Marble | Southerland Falls |
| 12LA31 | United States | Illinois | Limestone | Joliet |
| 13RB28 | United States | Tennessee | Marble | Knoxville |
| 7RA16 | United States | Pennsylvania | Limestone | Wernersville |
| 10RA11 | United States | Pennsylvania | Dolomite | York |
| 13LA27 | United States | Tennessee | Limestone | Nashville |
| 14RB2 | United States | Vermont | Marble | Pittsford |
| 9RA16 | United States | Minnesota | Limestone | St. Paul |