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Stone description: dark gray
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 8Lb8 | United States | Ohio | Limestone | Hamilton |
| 7LB33 | United States | Connecticut | Gneiss | Haddam |
| 6LA36 | United States | Connecticut | Gneiss | Greenwich |
| 5La40 | United States | South Carolina | Granite | Greenville |
| 14LB11 | United States | Ohio | Dolomite | Greenfield |
| 13LB45 | United States | Kentucky | Limestone | Green Co. |
| 13LA43 | United States | Kentucky | Limestone | Grahampton |
| 12RA17 | United States | Iowa | Dolomite | Garrison |
| 12RB17 | United States | Iowa | Dolomite | Garrison |
| 11LB38 | United States | Virginia | Granite | Fredericksburg |
| 10RB23 | United States | Massachusetts | Granite | Framingham |
| 11RB30 | United States | Virginia | Schist | Farquier Co. |
| 6RA40 | United States | Maryland | Gneiss | Ellicott City |
| 6RA34 | United States | Minnesota | Granite | E. St. Cloud |
| 5RB16 | United States | Massachusetts | Diabase | E. Longmeadow |
| 5LA33 | United States | Minnesota | Diabase | Duluth |
| 5LB34 | United States | Minnesota | Gabbro | Duluth |
| 5LA23 | United States | North Carolina | Granite | Davidson College |
| 8RB41 | United States | New Jersey | Sandstone | Danville |
| 14ra13 | United States | Ohio | Dolomite | Columbus Grove |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 6LB14 | United States | Pennsylvania | Diabase | Collins Station Lancaster Co. |
| 5LB9 | United States | Massachusetts | Granite | Clinton |
| 7LB17 | United States | Pennsylvania | Gneiss | Chester |
| 11Lb36 | United States | Virginia | Diabase | Catlett's Station |
| 11LA39 | United States | Tennessee | Sandstone | Cater's Creek Davidson Co. |
| 5LA26 | Austria | Pitchstone | Castleruth | |
| 12LA7 | United States | New York | Limestone | Canajoharie |
| 7RA25 | United States | Maine | Granite | Canaan |
| 14RB35 | Spain | Limestone | Calatayud, Saragossa | |
| 11RA6 | United States | New York | Limestone | Buffalo |
| 6RB26 | United States | Maine | Granite | Bryant's Pond |
| 12RB4 | United States | Illinois | Limestone | Breese |
| 4LB16 | United States | Delaware | Gneiss | Brandywine |
| 14RB47 | United States | Kentucky | Limestone | Bloomfield |
| 13RB42 | United States | Indiana | Limestone | Bedford |
| 10LB23 | United States | Massachusetts | Gneiss | Becket |
| 6RB42 | United States | South Carolina | Granite | Batesburg |
| 5RA31 | United States | Georgia | Gneiss | Atlanta |
| 5LB22 | United States | North Carolina | Gneiss | Alexander |
| 10RB42 | United States | Oregon | Basalt | Albany |
| 6LA41 | United States | South Carolina | Granite | Aiken Co. |
| 8LA27 | United States | Maine | Diabase | Addison Point |
| 5LB25 | United States | Maine | Diabase | Addison Point |
| 5RB27 | United States | Maine | Diabase | Addison |