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Stone description: dark gray
| Wall Number | Country | State | Classification | Source Sort descending |
|---|---|---|---|---|
| 7LB27 | United States | New York | Sandstone | Phoenicia |
| 14RB38 | United States | Pennsylvania | Marble | Pine Grove Schuylkill Co. |
| 14LB45 | United States | Kentucky | Limestone | Pineville |
| 12LA22 | United States | Missouri | Limestone | Pleasant Hill |
| 6LA18 | United States | Pennsylvania | Sandstone | Queens Run Clinton Co. |
| 5RB12 | United States | Massachusetts | Granite | Quincy |
| 5RB13 | United States | Massachusetts | Granite | Quincy |
| 5RB14 | United States | Massachusetts | Granite | Quincy |
| 5RB17 | United States | Massachusetts | Granite | Quincy |
| 5RB18 | United States | Massachusetts | Granite | Quincy |
| 5RB19 | United States | Massachusetts | Granite | Quincy |
| 1L7 | United States | Massachusetts | Granite | Quincy |
| 5RB20 | United States | Massachusetts | Granite | Quincy |
| 1L8 | United States | Massachusetts | Granite | Quincy |
| 1L9 | United States | Massachusetts | Granite | Quincy |
| 1R7 | United States | Massachusetts | Granite | Quincy |
| 1R8 | United States | Massachusetts | Granite | Quincy |
| 1R9 | United States | Massachusetts | Granite | Quincy |
| 11LB7 | United States | Pennsylvania | Dolomite | Reading |
| 6RB19 | United States | Pennsylvania | Diabase | Reading |
| 13LA35 | Spain | Limestone | Ricla, Saragossa | |
| 6RB22 | United States | Massachusetts | Granite | Rockport |
| 6RB43 | United States | New Jersey | Diabase | Rocky Hill |
| 8Lb40 | United States | West Virginia | Sandstone | Rowlesburgh |
| 5LA31 | United States | Colorado | Granite | Salida |
| 14RA3 | United States | Illinois | Dolomite | Saline |
| 8RA6 | United States | New York | Limestone | Sandy Hill |
| 6LB4 | United States | Pennsylvania | Sandstone | Schickshinny Luzerne Co. |
| 11LB15 | United States | Missouri | Dolomite | Sedalia |
| 7RA11 | United States | Connecticut | Limestone | Shelterville |
| 12RQ | United States | New York | Sandstone | South Unadilla |
| 8LB27 | United States | Maine | Granite | St. George |
| 6RB10 | United States | Pennsylvania | Diabase | St. Peters |
| 14RB46 | United States | Kentucky | Limestone | Stewart's Mill Clark Co. |
| 5LA43 | United States | New Hampshire | Gneiss | Sunapee |
| 6RA25 | United States | Maine | Gneiss | Turner |
| 10rb16 | Argentina | Marble | Unkown | |
| 14RA9 | United States | Pennsylvania | Limestone | Vanport |
| 10LA30 | United States | Maine | Diabase | Vinal Haven |
| 6RA46 | United States | Michigan | Gneiss | Vulcan |
| 9RA23 | United States | Massachusetts | Granite | W. Quincy |
| 5RA21 | United States | Massachusetts | Granite | W. Quincy |
| 6RA22 | United States | Massachusetts | Granite | W. Quincy |
| 14RA21 | United States | Iowa | Limestone | Washington |
| 5RA43 | United States | New Jersey | Diabase | Weehawken |
| 5RB46 | United States | Delaware | Gneiss | Wilmington |