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Stone description: gray
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 12LA27 | Italy | Marble | Serravezza | |
| 4L1 | Italy | Marble | Carrara | |
| 4R1 | Italy | Marble | Carrara | |
| 12RA26 | Italy | Marble | Serravezza | |
| 9RA32 | Italy | Sandstone | Leghorn | |
| 11LA29 | Italy | Marble | Serravezza | |
| 11LB25 | Italy | Sandstone | Leghorn | |
| 1L14 | Italy | Marble | Carrara | |
| 1R14 | Italy | Marble | Carrara | |
| 11RA33 | Italy | Marble | Serravezza | |
| 10RB35 | Mexico | Pumice | San Juan, Pueblo State | |
| 8LB1 | Portugal | Marble | Alvrite, Coimbra | |
| 8RA2 | Portugal | Limestone | Freguesias, Coimbra | |
| 9LA15 | Siam (Thailand) | Marble | ? | |
| 10RA45 | United States | Vermont | Granite | Woodbury |
| 14L49 | United States | Missouri | Limestone | Phenix |
| 5La8 | United States | Ohio | Sandstone | Youngstown |
| 6LB25 | United States | Maine | Granite | Williamantic |
| 7RB34 | United States | Connecticut | Granite | W. Norfolk |
| S2-133 | United States | Montana | Marble | Gardner |
| 10la10 | United States | Ohio | Limestone | Bloomville |
| 11RA8 | United States | Pennsylvania | Limestone | Cove Statioan Bedford Co. |
| 30WE | United States | Indiana | Limestone | Bloomington |
| 5RA36 | United States | Connecticut | Gneiss | Bolton |
| 6WE | United States | Ohio | Sandstone | Amherst |
| 10RA47 | United States | Tennessee | Syenite | Hiwasee copper mines |
| 14LA21 | United States | Iowa | Limestone | Marble Rock |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 6LB26 | United States | Maine | Granite | Waldoborough |
| 7RB36 | United States | Nevada | Sandstone | Carson City |
| S2-135 | United States | Vermont | Marble | Pittsford |
| 10LA13 | United States | Maryland | Dolomite | Findlay |
| 11RB27 | United States | Virginia | Granite | Near Richmond |
| 31WE | United States | Indiana | Limestone | Bloomington |
| 5RA4 | United States | Ohio | Sandstone | Buena Vista |
| 7LA21 | United States | North Carolina | Granite | Alamance Co. |
| 9La23 | United States | Massachusetts | Granite | Peabody |
| 10RA49 | United States | Tennessee | Granite | Carter Co. S. E. part |
| 5LB10 | United States | Massachusetts | Granite | Fitchburg |
| 6LB27 | United States | Maine | Granite | Frankfort |
| 7RB37 | United States | Nevada | Andesite | Virginia City |
| S2-139 | United States | New York | Marble | Plattsburg |
| 11RB33 | United States | Oregon | Sandstone | Jacksonville |
| 32WE | United States | Arkansas | Limestone | Batesville |
| 5RA40 | United States | South Carolina | Granite | Rion |
| 7LA24 | United States | Maine | Granite | Round Pond |
| 9LA30 | United States | New York | Sandstone | W. Liberty |
| 10RB18 | United States | Virginia | Marble | Craigsville |
| 14LB20 | United States | Iowa | Limestone | Knoxville |
| 5LB13 | United States | Massachusetts | Gneiss | Westford |
| 6LB34 | United States | Minnesota | Granite | E. St. Cloud |
| S2-141 | United States | Missouri | Marble | Carthage |
| 10LA18 | United States | Iowa | Limestone | Marshalltown |
| 11RB36 | United States | New Hampshire | Granite | Enfield |
| 5RA41 | United States | South Carolina | Granite | Newberry Co. |
| 7LA25 | United States | Maine | Granite | Vinal Haven |
| 9LB12 | United States | Iowa | Limestone | Earlham |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 14LB22 | United States | Iowa | Limestone | Dudley Sta. Wapello Co. |
| 5LB14 | United States | Massachusetts | Gneiss | Westford |
| 6LB36 | United States | Connecticut | Granite | E. Canaan |
| 7RQ | United States | Ohio | Sandstone | Kipton |
| S2-142 | United States | California | Marble | Columbia |
| 10LA20 | United States | Iowa | Limestone | Iowa Falls |
| 11RB42 | United States | Washington | Sandstone | Bellingham |
| 3L14 | United States | Vermont | Marble | W. Rutland |
| 5RA46 | United States | Rhode Island | Granite | Niantic |
| 7LA29 | United States | California | Sandstone | Livermore |
| 9LB14 | United States | Iowa | Limestone | Fairfield |
| 10RB27 | United States | Maine | Granite | E. Blue Hill |
| 14LB26 | United States | Kansas | Limestone | Irving |
| 5LB16 | United States | Massachusetts | Granite | Gloucester |
| 6Lb37 | United States | Connecticut | Granite | Branchville |
| 8B | United States | Minnesota | Granite | Isle |
| S2-143 | United States | California | Marble | Columbia |
| 10La32 | United States | Maine | Granite | Dix Island |
| 11RB7 | United States | New York | Limestone | Three Mile Bay |
| 3L5 | United States | New York | Marble | Moriah |
| 5RA8 | United States | Ohio | Sandstone | Greenfield |
| 7LA36 | United States | Arizona | Tuff | Kirkland |
| 9LB36 | United States | Alabama | Sandstone | Greensport |
| 10RB28 | United States | Maine | Granite | Somesville Mt. Desert |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 5LB18 | United States | Massachusetts | Granite | Gloucester |
| 6LB39 | United States | Ohio | Sandstone | Youngstown |
| 8EE | United States | Ohio | Sandstone | Amherst |
| S2-145 | United States | Alaska | Marble | Tokeen |
| 10LA33 | United States | Maine | Granite | Vinal Haven |
| 11WE | United States | Ohio | Sandstone | Amherst |
| 3LQ | United States | Missouri | Limestone | Carthage |
| 5RB21 | United States | North Carolina | Granite | Toisnot |
| 7LA42 | United States | New Hampshire | Granite | W. Concord |
| 9Lb37 | United States | Oregon | Sandstone | Forest Grove |
| 10RB31 | United States | Texas | Sandstone | Mormon Mills |
| 14LB48 | United States | Missouri | Limestone | Carthage |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 6LB40 | United States | Maryland | Granite | Woodstock |
| 8La11 | United States | Illinois | Limestone | Belknap |
| S2-148 | United States | Georgia | Marble | Tate |
| 10LA34 | United States | Maine | Granite | St. Thomaston |