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Stone description: gray
| Wall Number Sort ascending | Country | State | Classification | Source |
|---|---|---|---|---|
| 5RA16 | United States | Ohio | Sandstone | Leesville |
| 5RA13 | United States | Ohio | Sandstone | Marietta |
| 5RA12 | United States | Ohio | Sandstone | Euclid |
| 5RA11 | United States | Ohio | Sandstone | Lithopolis |
| 5LB7 | United States | Ohio | Sandstone | N. Bloomfield |
| 5LB5 | United States | Ohio | Sandstone | Newburgh |
| 5Lb44 | United States | New Hampshire | Granite | Concord |
| 5LB43 | United States | New Hampshire | Granite | Concord |
| 5LB40 | United States | South Carolina | Granite | Fairfield Co. |
| 5LB39 | United States | South Carolina | Granite | Charleston |
| 5LB35 | United States | Connecticut | Gneiss | Lyme |
| 5LB29 | United States | California | Basalt | Bridgeport |
| 5LB28 | United States | California | Tuff | Cordelia |
| 5LB26 | Austria | Granite | Neuhaus | |
| 5LB23 | United States | North Carolina | Granite | Davidson College |
| 5LB20 | United States | North Carolina | Gneiss | Jamestown |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 5LB18 | United States | Massachusetts | Granite | Gloucester |
| 5LB16 | United States | Massachusetts | Granite | Gloucester |
| 5LB14 | United States | Massachusetts | Gneiss | Westford |
| 5LB13 | United States | Massachusetts | Gneiss | Westford |
| 5LB10 | United States | Massachusetts | Granite | Fitchburg |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 5La8 | United States | Ohio | Sandstone | Youngstown |
| 5LA7 | United States | Ohio | Sandstone | Millersburg |
| 5LA45 | United States | Vermont | Granite | Ryegate |
| 5LA42 | United States | New Jersey | Diabase | Rock Church |
| 5LA4 | United States | Ohio | Sandstone | Norwalk |
| 5LA39 | United States | South Carolina | Granite | Aiken Co. |
| 5LA30 | United States | Texas | Granite | Nr. Llano |
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 5LA29 | United States | California | Granite | Rocklin |
| 5LA25 | United States | Maine | Granite | Frankfort |
| 5LA24 | United States | Maine | Granite | S. Brookville |
| 5LA21 | United States | North Carolina | Gneiss | Greensborough |
| 5LA16 | United States | Ohio | Sandstone | Windsor |
| 5LA14 | United States | Ohio | Sandstone | Columbus |
| 5LA13 | United States | Ohio | Sandstone | New Lisbon |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 5EE | United States | Alabama | Limestone | Rockwood |
| 4RQ | United States | Ohio | Sandstone | Amherst |
| 4RB20 | United States | New Hampshire | Granite | Mason |
| 4RA17 | United States | Vermont | Marble | W. Rutland |
| 4R1 | Italy | Marble | Carrara | |
| 4LB21 | United States | Massachusetts | Granite | Fitchburg |
| 4LA17 | United States | Vermont | Marble | W. Rutland |
| 4L1 | Italy | Marble | Carrara | |
| 3r5 | United States | New York | Marble | Moriah |
| 3R10 | Australia | Marble | New South Wales | |
| 3LQ | United States | Missouri | Limestone | Carthage |
| 3L5 | United States | New York | Marble | Moriah |
| 3L14 | United States | Vermont | Marble | W. Rutland |
| 3l10 | Australia | Marble | New South Wales | |
| 32WE | United States | Arkansas | Limestone | Batesville |
| 31WE | United States | Indiana | Limestone | Bloomington |
| 30WE | United States | Indiana | Limestone | Bloomington |
| 2RQ | United States | Ohio | Sandstone | Amherst |
| 2R17 | United States | Missouri | Limestone | Phenix |
| 2L17 | United States | Missouri | Limestone | Phenix |
| 29WE | United States | Indiana | Limestone | Bloomington |
| 28WE | United States | Indiana | Limestone | Bedford |
| 28EE | United States | Ohio | Sandstone | McDermott |
| 26EE | United States | Arkansas | Limestone | Batesville |
| 25WE | United States | Ohio | Sandstone | Amherst |
| 24WE | United States | Indiana | Limestone | Bedford |
| 1R14 | Italy | Marble | Carrara | |
| 1Lq | United States | Missouri | Limestone | Carthage |
| 1L6 | Canada | Granite | Halifax Co. | |
| 1L14 | Italy | Marble | Carrara | |
| 16WE | United States | Indiana | Limestone | Bedford |
| 16EE | United States | Indiana | Limestone | Bedford |
| 16B | United States | Maine | Granite | Frankfort |
| 15EE | United States | Indiana | Limestone | Bedford |
| 14RB48 | United States | Missouri | Limestone | Carthage |
| 14RB3 | United States | Illinois | Dolomite | Chicago |
| 14RB20 | United States | Iowa | Limestone | Winterset |
| 14RB14 | United States | Iowa | Limestone | Le-Grand |
| 14RB1 | United States | Indiana | Dolomite | Bluffton |
| 14RA31 | Austria | Marble | Karst | |
| 14R49 | United States | Missouri | Limestone | Phenix |
| 14LB48 | United States | Missouri | Limestone | Carthage |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 14LB26 | United States | Kansas | Limestone | Irving |
| 14LB22 | United States | Iowa | Limestone | Dudley Sta. Wapello Co. |
| 14LB20 | United States | Iowa | Limestone | Knoxville |
| 14LA32 | Austria | Marble | Trent | |
| 14LA21 | United States | Iowa | Limestone | Marble Rock |
| 14L49 | United States | Missouri | Limestone | Phenix |
| 14EE | United States | Indiana | Limestone | Bedford |
| 14C | United States | Indiana | Limestone | Bedford |
| 13RB40 | United States | Illinois | Limestone | Chester |
| 13RB35 | United States | New York | Limestone | Williamsville |
| 13RA22 | United States | Missouri | Sandstone | Miami Station Carroll Co. |
| 13RA21 | United States | Iowa | Limestone | Bentonsport |
| 13RA13 | United States | Iowa | Dolomite | Humbolt |
| 13LB9 | United States | Ohio | Dolomite | Sandusky |
| 13LB42 | United States | Illinois | Limestone | Iuka |
| 13LB38 | United States | New York | Marble | Port Henry |
| 13LB27 | United States | Tennessee | Limestone | Cowan |
| 13LA27 | United States | Tennessee | Limestone | Nashville |