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Stone description: dark gray
| Wall Number Sort descending | Country | State | Classification | Source |
|---|---|---|---|---|
| 6LA41 | United States | South Carolina | Granite | Aiken Co. |
| 6LB14 | United States | Pennsylvania | Diabase | Collins Station Lancaster Co. |
| 6LB18 | United States | Pennsylvania | Gneiss | Philadelphia |
| 6Lb19 | United States | Pennsylvania | Diabase | Jacksonwald |
| 6LB29 | United States | New York | Gneiss | Hastings |
| 6LB4 | United States | Pennsylvania | Sandstone | Schickshinny Luzerne Co. |
| 6LB43 | United States | New Jersey | Diabase | Lambertville |
| 6RA22 | United States | Massachusetts | Granite | W. Quincy |
| 6RA25 | United States | Maine | Gneiss | Turner |
| 6RA34 | United States | Minnesota | Granite | E. St. Cloud |
| 6RA40 | United States | Maryland | Gneiss | Ellicott City |
| 6RA46 | United States | Michigan | Gneiss | Vulcan |
| 6RA5 | United States | Pennsylvania | Sandstone | Mauch Chunk |
| 6RB10 | United States | Pennsylvania | Diabase | St. Peters |
| 6RB17 | United States | Pennsylvania | Gneiss | Philadelphia |
| 6RB19 | United States | Pennsylvania | Diabase | Reading |
| 6RB22 | United States | Massachusetts | Granite | Rockport |
| 6RB26 | United States | Maine | Granite | Bryant's Pond |
| 6RB42 | United States | South Carolina | Granite | Batesburg |
| 6RB43 | United States | New Jersey | Diabase | Rocky Hill |
| 7LB17 | United States | Pennsylvania | Gneiss | Chester |
| 7LB27 | United States | New York | Sandstone | Phoenicia |
| 7LB33 | United States | Connecticut | Gneiss | Haddam |
| 7RA11 | United States | Connecticut | Limestone | Shelterville |
| 7RA25 | United States | Maine | Granite | Canaan |
| 8LA23 | United States | Massachusetts | Diabase | Medford |
| 8LA27 | United States | Maine | Diabase | Addison Point |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 8LA45 | United States | Washington | Sandstone | Olymphia |
| 8LA9 | Canada | Limestone | Kingston | |
| 8LB27 | United States | Maine | Granite | St. George |
| 8Lb40 | United States | West Virginia | Sandstone | Rowlesburgh |
| 8Lb8 | United States | Ohio | Limestone | Hamilton |
| 8RA18 | United States | Kentucky | Limestone | Lebanon |
| 8RA27 | United States | Maine | Schist | Knightsville |
| 8RA6 | United States | New York | Limestone | Sandy Hill |
| 8RA9 | Canada | Limestone | Montreal | |
| 8RB24 | United States | North Carolina | Granite | Oxford |
| 8RB38 | United States | Maryland | Gneiss | Ilchester |
| 8RB41 | United States | New Jersey | Sandstone | Danville |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 9LA14 | Spain | Limestone | Murcia, Murcia | |
| 9RA17 | United States | Pennsylvania | Argillite (Slate) | Lynnport |
| 9RA23 | United States | Massachusetts | Granite | W. Quincy |
| 9RA5 | United States | Missouri | Limestone | New London |