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Stone description: gray
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 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 | |
| 12LA27 | Italy | Marble | Serravezza | |
| 4L1 | Italy | Marble | Carrara | |
| 10RB35 | Mexico | Pumice | San Juan, Pueblo State | |
| 8LB1 | Portugal | Marble | Alvrite, Coimbra | |
| 8RA2 | Portugal | Limestone | Freguesias, Coimbra | |
| 9LA15 | Siam (Thailand) | Marble | ? | |
| 10LA46 | United States | New Hampshire | Granite | Fitzwilliams |
| 12LB12 | United States | Kentucky | Dolomite | Louisville |
| 4LA17 | United States | Vermont | Marble | W. Rutland |
| 5RB38 | United States | North Carolina | Granite | Winston |
| 7LB22 | United States | North Carolina | Gneiss | Shelby |
| 9RA12 | United States | Iowa | Limestone | Iowa City |
| 10RB44 | United States | New Hampshire | Granite | Durham |
| 14RB1 | United States | Indiana | Dolomite | Bluffton |
| 6LB6 | United States | Pennsylvania | Sandstone | Prospect |
| 8LA21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| S2-159 | United States | Tennessee | Marble | Knoxville |
| 10LB12 | United States | Kansas | Dolomite | Topeka |
| 12LB16 | United States | Iowa | Dolomite | Cedar Falls |
| 4LB21 | United States | Massachusetts | Granite | Fitchburg |
| 5RB39 | United States | Maryland | Granite | Montrose |
| 7LB24 | United States | Maine | Granite | Pownal |
| 9RA13 | United States | Kansas | Limestone | Lane |
| 10RB6 | United States | Missouri | Limestone | Bear Creek Marion Co. |
| 14RB14 | United States | Iowa | Limestone | Le-Grand |
| 5LB28 | United States | California | Tuff | Cordelia |
| 6LB9 | United States | Pennsylvania | Sandstone | Baden |
| 8LA22 | United States | Massachusetts | Diabase | Somerville |
| S2-160 | United States | Tennessee | Marble | Knoxville |
| 10LB17 | United States | Pennsylvania | Soapstone | Montgomery Co. |
| 12LB20 | United States | Vermont | Marble | W. Rutland |
| 5RB4 | United States | Ohio | Sandstone | Bellaire |
| 7LB28 | United States | Kentucky | Sandstone | Taylor Co. |
| 9RA16 | United States | Minnesota | Limestone | St. Paul |
| 10WE | United States | Ohio | Sandstone | Amherst |
| 14RB20 | United States | Iowa | Limestone | Winterset |
| 5LB29 | United States | California | Basalt | Bridgeport |
| 6RA12 | United States | Pennsylvania | Sandstone | Lucesco |
| 8LA37 | United States | Missouri | Sandstone | Warrensburg |
| S2-162 | United States | North Carolina | Marble | Murphy |
| 10Lb19 | United States | Pennsylvania | Sandstone | Stoop's Ferry |
| 4RA17 | United States | Vermont | Marble | W. Rutland |
| 5RB40 | United States | South Carolina | Granite | Columbia |
| 7LB29 | United States | California | Sandstone | Livermore |
| 9RA31 | United States | Connecticut | Gneiss | Branford |
| 11C | United States | Indiana | Limestone | Lawrence Co. |
| 14RB3 | United States | Illinois | Dolomite | Chicago |
| 5LB35 | United States | Connecticut | Gneiss | Lyme |
| 6RA17 | United States | Pennsylvania | Sandstone | Greensburgh |
| 8LA6 | United States | New York | Limestone | Louisville |
| S2-4 | United States | Indiana | Limestone | Bedford |
| 10LB22 | United States | Massachusetts | Gneiss | Monson |
| 12RA31 | United States | Maryland | Marble | Keedysville |
| 4RB20 | United States | New Hampshire | Granite | Mason |
| 5RB41 | United States | South Carolina | Granite | Fairfield Co. |
| 7LB32 | United States | Minnesota | Granite | Watab |
| 11La14 | United States | Iowa | Limestone | Charles City |
| 14RB48 | United States | Missouri | Limestone | Carthage |
| 5LB39 | United States | South Carolina | Granite | Charleston |
| 6RA26 | United States | Maine | Granite | Chesterville |
| S2-47 | United States | Vermont | Granite | Barre |
| 10LB25 | United States | Massachusetts | Gneiss | Northfield |
| 12RB20 | United States | Vermont | Marble | W. Rutland |
| 4RQ | United States | Ohio | Sandstone | Amherst |
| 5RB6 | United States | Ohio | Sandstone | Cumberland |
| 7Lb34 | United States | Connecticut | Gneiss | Sterling |
| 9RB11 | United States | Iowa | Limestone | Givin |
| 11LA21 | United States | Missouri | Limestone | Pleasant Hill |
| 15EE | United States | Indiana | Limestone | Bedford |
| 5LB40 | United States | South Carolina | Granite | Fairfield Co. |
| 6RA27 | United States | Maine | Granite | Brunswick |
| 8LB16 | United States | Mississippi | Limestone | Teshomingo County |
| S2-48 | United States | New Hampshire | Granite | Concord |
| 10LB27 | United States | North Carolina | Granite | Louisburg |
| 12RB30 | United States | New York | Marble | Chazy |
| 5EE | United States | Alabama | Limestone | Rockwood |
| 5RB8 | United States | Ohio | Sandstone | Independence |
| 7LB38 | United States | Maryland | Granite | Woodstock |
| 9RB22 | United States | Massachusetts | Granite | Worcester |
| 11LA27 | United States | Tennessee | Marble | Knoxville |
| 16B | United States | Maine | Granite | Frankfort |
| 5LB43 | United States | New Hampshire | Granite | Concord |
| 6RA35 | United States | Connecticut | Granite | Millstone Point |
| 8LB21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| S2-5 | United States | Missouri | Limestone | Carthage |
| 10LB29 | United States | Maine | Granite | St. Thomaston |
| 12RB38 | United States | Kentucky | Limestone | Taylorsville |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 5RQ | United States | Ohio | Sandstone | Kipton |
| 7LB41 | United States | Montana | Granite | Lewis & Clark Co. |
| 9RB23 | United States | Maine | Granite | Hurricane Isl. |
| 16EE | United States | Indiana | Limestone | Bedford |