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Stone description: gray
| Wall Number Sort ascending | Country | State | Classification | Source |
|---|---|---|---|---|
| 13LA21 | United States | Iowa | Limestone | Quarry, Marshall Co. |
| 12RB7 | United States | New York | Limestone | Indian Res. Onondaga Co. |
| 12RB38 | United States | Kentucky | Limestone | Taylorsville |
| 12RB30 | United States | New York | Marble | Chazy |
| 12RB20 | United States | Vermont | Marble | W. Rutland |
| 12RA31 | United States | Maryland | Marble | Keedysville |
| 12RA26 | Italy | Marble | Serravezza | |
| 12LB20 | United States | Vermont | Marble | W. Rutland |
| 12LB16 | United States | Iowa | Dolomite | Cedar Falls |
| 12LB12 | United States | Kentucky | Dolomite | Louisville |
| 12LA27 | Italy | Marble | Serravezza | |
| 12LA14 | United States | Missouri | Limestone | Kansas City |
| 12EE | United States | Indiana | Limestone | Bedford |
| 11WE | United States | Ohio | Sandstone | Amherst |
| 11RB7 | United States | New York | Limestone | Three Mile Bay |
| 11RB42 | United States | Washington | Sandstone | Bellingham |
| 11RB36 | United States | New Hampshire | Granite | Enfield |
| 11RB33 | United States | Oregon | Sandstone | Jacksonville |
| 11RB27 | United States | Virginia | Granite | Near Richmond |
| 11RA8 | United States | Pennsylvania | Limestone | Cove Statioan Bedford Co. |
| 11RA33 | Italy | Marble | Serravezza | |
| 11RA31 | United States | Tennessee | Marble | Knoxville |
| 11RA28 | United States | Tennessee | Limestone | Nashville |
| 11RA10 | United States | Ohio | Dolomite | Milton Twp. Woods Co. |
| 11Lq | United States | Tennessee | Marble | Knoxville |
| 11LB43 | Canada | Sandstone | Cliffton, New Brunswick | |
| 11LB42 | United States | North Carolina | Gneiss | Hickory |
| 11LB41 | United States | Washington | Sandstone | Bellingham |
| 11LB39 | United States | Virginia | Granite | Manchester |
| 11LB37 | United States | Virginia | Granite | Manchester |
| 11LB31 | United States | Kansas | Sandstone | Pawnee |
| 11LB30 | United States | Missouri | Sandstone | Butler |
| 11LB25 | Italy | Sandstone | Leghorn | |
| 11LB21 | United States | Missouri | Limestone | Paris |
| 11LA29 | Italy | Marble | Serravezza | |
| 11LA27 | United States | Tennessee | Marble | Knoxville |
| 11LA21 | United States | Missouri | Limestone | Pleasant Hill |
| 11La14 | United States | Iowa | Limestone | Charles City |
| 11C | United States | Indiana | Limestone | Lawrence Co. |
| 10WE | United States | Ohio | Sandstone | Amherst |
| 10RB6 | United States | Missouri | Limestone | Bear Creek Marion Co. |
| 10RB44 | United States | New Hampshire | Granite | Durham |
| 10RB40 | United States | Maryland | Granite | Gwynn Falls |
| 10RB35 | Mexico | Pumice | San Juan, Pueblo State | |
| 10RB31 | United States | Texas | Sandstone | Mormon Mills |
| 10RB28 | United States | Maine | Granite | Somesville Mt. Desert |
| 10RB27 | United States | Maine | Granite | E. Blue Hill |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 10RB18 | United States | Virginia | Marble | Craigsville |
| 10RA49 | United States | Tennessee | Granite | Carter Co. S. E. part |
| 10RA47 | United States | Tennessee | Syenite | Hiwasee copper mines |
| 10RA45 | United States | Vermont | Granite | Woodbury |
| 10RA44 | United States | New Jersey | Diabase | W. New York |
| 10RA41 | United States | New Hampshire | Granite | Farmington |
| 10RA39 | United States | New Hampshire | Granite | Allenstown |
| 10RA38 | United States | New Hampshire | Granite | Fitzwilliams |
| 10RA36 | United States | New Hampshire | Granite | Fitzwilliams |
| 10RA34 | United States | Virginia | Granite | Tuckahoe Dist. |
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 10RA15 | United States | Ohio | Dolomite | White House |
| 10RA13 | United States | Ohio | Dolomite | White House |
| 10RA10 | United States | New York | Limestone | Prescott |
| 10LB45 | United States | New Hampshire | Granite | Plymouth |
| 10LB43 | United States | New Hampshire | Granite | Hanover |
| 10Lb36 | United States | Kansas | Sandstone | Pawnee |
| 10Lb31 | United States | Maine | Granite | W. Sullivan |
| 10LB29 | United States | Maine | Granite | St. Thomaston |
| 10LB27 | United States | North Carolina | Granite | Louisburg |
| 10LB25 | United States | Massachusetts | Gneiss | Northfield |
| 10LB22 | United States | Massachusetts | Gneiss | Monson |
| 10Lb19 | United States | Pennsylvania | Sandstone | Stoop's Ferry |
| 10LB17 | United States | Pennsylvania | Soapstone | Montgomery Co. |
| 10LB12 | United States | Kansas | Dolomite | Topeka |
| 10LA46 | United States | New Hampshire | Granite | Fitzwilliams |
| 10LA44 | United States | New Hampshire | Granite | Concord |
| 10LA43 | United States | New Hampshire | Granite | Rumney |
| 10LA34 | United States | Maine | Granite | St. Thomaston |
| 10LA33 | United States | Maine | Granite | Vinal Haven |
| 10La32 | United States | Maine | Granite | Dix Island |
| 10LA20 | United States | Iowa | Limestone | Iowa Falls |
| 10LA18 | United States | Iowa | Limestone | Marshalltown |
| 10LA17 | Australia | Marble | South Australia | |
| 10LA13 | United States | Maryland | Dolomite | Findlay |
| 10la10 | United States | Ohio | Limestone | Bloomville |
| 10EE | United States | Ohio | Sandstone | Amherst |
| 10C | United States | Indiana | Limestone | Bloomington |