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Stone description: dark gray
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 12RB23 | United States | Kansas | Limestone | Oswego |
| 5RB35 | United States | Connecticut | Diabase | New Haven |
| 1R7 | United States | Massachusetts | Granite | Quincy |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 12RB24 | United States | Tennessee | Limestone | Lebanon Pike |
| 5RB46 | United States | Delaware | Gneiss | Wilmington |
| 10L51 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
| 1R8 | United States | Massachusetts | Granite | Quincy |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 12RB4 | United States | Illinois | Limestone | Breese |
| 6LA18 | United States | Pennsylvania | Sandstone | Queens Run Clinton Co. |
| 10LA30 | United States | Maine | Diabase | Vinal Haven |
| 1R9 | United States | Massachusetts | Granite | Quincy |
| 8LA45 | United States | Washington | Sandstone | Olymphia |
| 12RB5 | United States | Tennessee | Limestone | Murfreesborough |
| 6LA36 | United States | Connecticut | Gneiss | Greenwich |
| 10LA42 | United States | New Jersey | Diabase | Jersey City |
| 4LB16 | United States | Delaware | Gneiss | Brandywine |
| 12RQ | United States | New York | Sandstone | South Unadilla |
| 6LA39 | United States | Massachusetts | Gneiss | Monson |
| 10LA5 | United States | Wisconsin | Dolomite | Oshkosh |
| 5LA23 | United States | North Carolina | Granite | Davidson College |
| 8LB27 | United States | Maine | Granite | St. George |
| 13La1 | United States | Vermont | Limestone | Isle La Motte |
| 6LA41 | United States | South Carolina | Granite | Aiken Co. |
| 10LA7 | United States | New York | Limestone | Onondaga |
| 8Lb40 | United States | West Virginia | Sandstone | Rowlesburgh |
| 6LB14 | United States | Pennsylvania | Diabase | Collins Station Lancaster Co. |
| 10LB18 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
| 5LA31 | United States | Colorado | Granite | Salida |
| 8Lb8 | United States | Ohio | Limestone | Hamilton |
| 13LA43 | United States | Kentucky | Limestone | Grahampton |
| 6LB18 | United States | Pennsylvania | Gneiss | Philadelphia |
| 10LB23 | United States | Massachusetts | Gneiss | Becket |
| 5LA33 | United States | Minnesota | Diabase | Duluth |
| 8RA18 | United States | Kentucky | Limestone | Lebanon |
| 13La46 | United States | Kentucky | Limestone | Livingstone |
| 6Lb19 | United States | Pennsylvania | Diabase | Jacksonwald |
| 10R51 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
| 5LA34 | United States | Connecticut | Gneiss | Middletown |
| 8RA27 | United States | Maine | Schist | Knightsville |
| 9LA14 | Spain | Limestone | Murcia, Murcia | |
| 14RB35 | Spain | Limestone | Calatayud, Saragossa | |
| 13LA35 | Spain | Limestone | Ricla, Saragossa | |
| 5RA37 | Mexico | Andesite | Hildalgo State | |
| 10rb16 | Argentina | Marble | Unkown |