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Stone description: light gray
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 11B | United States | New Hampshire | Granite | Concord |
| 14RB28 | United States | Tennessee | Limestone | Columbia |
| 13RB39 | United States | Illinois | Limestone | Columbia |
| 7RA31 | United States | Colorado | Sandstone | Coal Creek |
| 8LA36 | United States | Missouri | Sandstone | Clinton |
| 12RA3 | United States | Illinois | Dolomite | Chicago |
| 9LA41 | United States | Illinois | Sandstone | Chester |
| 6RB18 | United States | Pennsylvania | Gneiss | Chester |
| 8RA10 | United States | Illinois | Limestone | Chester |
| 9LB24 | United States | Massachusetts | Gneiss | Charlton |
| 11LA7 | United States | Pennsylvania | Marble | Cedar Hollow Lime Co. |
| 6rb33 | United States | Colorado | Tuff | Castle rock |
| 14RA28 | United States | Tennessee | Limestone | Carter's Station Creek |
| 6RB7 | United States | Pennsylvania | Sandstone | Cannonsburgh |
| 6RB28 | United States | New York | Sandstone | Canisteo |
| 5RB2 | United States | Ohio | Sandstone | Canal Dover Tuscarawas Co. |
| 5RA15 | United States | Ohio | Sandstone | Cambridge |
| 10RA9 | United States | Wisconsin | Dolomite | Byron |
| 13RB4 | United States | Wisconsin | Dolomite | Byron |
| 9LA9 | United States | Iowa | Limestone | Burlington |
| 9LB13 | United States | Iowa | Limestone | Burlington |
| 7LA23 | United States | North Carolina | Granite | Buckhorn Falls |
| 9LB10 | United States | Iowa | Limestone | Bristow |
| 6LB45 | United States | Vermont | Granite | Brattleboro |
| 12La36 | United States | Kentucky | Limestone | Bloomfield |
| 10RB13 | United States | Iowa | Limestone | Blansett |
| 8L48 | United States | Ohio | Sandstone | Berea |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 8r48 | United States | Ohio | Sandstone | Berea |
| 9RB21 | United States | Ohio | Sandstone | Berea |
| 12LB35 | United States | Indiana | Limestone | Bedford |
| 12RA1 | United States | Indiana | Limestone | Bedford |
| 8RA13 | United States | Indiana | Limestone | Bedford |
| 12RB36 | United States | Indiana | Limestone | Bedford |
| 6LB13 | United States | Pennsylvania | Sandstone | Beaver Falls |
| 9LA5 | United States | Missouri | Limestone | Barrett's Station |
| 6RB46 | United States | Vermont | Granite | Barre |
| 5LB38 | United States | Maryland | Gneiss | Baltimore |
| 5RA39 | United States | Maryland | Gneiss | Baltimore |
| 8RA14 | United States | Indiana | Limestone | Avoca |
| 13RB23 | United States | Texas | Limestone | Austin |
| 14LA2 | United States | Illinois | Dolomite | Aurora |
| 7RB24 | United States | Maine | Granite | Augusta |
| 9RB40 | United States | Indiana | Sandstone | Attica |
| 7LA22 | United States | North Carolina | Granite | Asheville |
| 9LA18 | United States | Pennsylvania | Sandstone | Antrim |
| 6RB20 | United States | Ohio | Sandstone | Amherst |
| 8LA2 | Portugal | Marble | Ameixoira, Coimbra |