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Stone description: light gray
| Wall Number Sort ascending | Country | State | Classification | Source |
|---|---|---|---|---|
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 5B | United States | Maine | Granite | North Jay |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 2R9 | United States | Vermont | Marble | Florence |
| 2R3 | United States | Vermont | Marble | Florence |
| 2R2 | United States | Vermont | Marble | Florence |
| 2R12 | United States | Vermont | Marble | Florence |
| 2R10 | United States | Vermont | Marble | Florence |
| 2L9 | United States | Vermont | Marble | Florence |
| 2L3 | United States | Vermont | Marble | Florence |
| 2L2 | United States | Vermont | Marble | Florence |
| 2L12 | United States | Vermont | Marble | Florence |
| 2L10 | United States | Vermont | Marble | Florence |
| 2c | United States | Alabama | Limestone | Rockwood |
| 2B | United States | North Carolina | Granite | Mt. Airy |
| 1R5 | United States | Connecticut | Granite | Thomaston |
| 1R4 | United States | Connecticut | Granite | Reynold's Bridge |
| 1B | United States | Massachusetts | Granite | W. Chelmsford |
| 17B | United States | Massachusetts | Granite | W. Chelmsford |
| 14RB45 | United States | Kentucky | Limestone | Frankfort |
| 14RB4 | United States | Illinois | Dolomite | Kankakee |
| 14RB36 | Spain | Limestone | Murcia, Murcia | |
| 14RB28 | United States | Tennessee | Limestone | Columbia |
| 14RB21 | United States | Iowa | Limestone | Pella Station, Marion Co. |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 14RB16 | United States | Iowa | Dolomite | Franklin |
| 14RB13 | United States | Ohio | Dolomite | Sandusky |
| 14RB12 | United States | Indiana | Limestone | Oakdale |
| 14RA28 | United States | Tennessee | Limestone | Carter's Station Creek |
| 14RA2 | United States | Illinois | Dolomite | Joilet |
| 14RA16 | United States | Iowa | Dolomite | Franklin |
| 14RA15 | United States | Iowa | Dolomite | Winterset |
| 14RA10 | United States | Pennsylvania | Dolomite | Mill Lane Chester Co. |
| 14Lb46 | United States | Kentucky | Limestone | Princeton |
| 14LB43 | United States | Nebraska | Limestone | LaPlatte |
| 14LB15 | United States | Iowa | Dolomite | Manchester |
| 14LB13 | United States | Ohio | Limestone | Dayton |
| 14LB1 | United States | Indiana | Dolomite | Montpelier |
| 14LA6 | United States | Wisconsin | Dolomite | Taycheedah Twp. Fon du Lac Co. |
| 14LA5 | United States | Wisconsin | Dolomite | Eden |
| 14LA46 | Portugal | Limestone | Janianes, Coimbra | |
| 14LA45 | Portugal | Limestone | Ega, Coimbra | |
| 14LA3 | United States | Illinois | Dolomite | Joilet |
| 14LA2 | United States | Illinois | Dolomite | Aurora |
| 14LA13 | United States | Ohio | Dolomite | Urbana |
| 13rb46 | United States | Alabama | Limestone | Leighton |
| 13RB44 | United States | Kentucky | Limestone | Frankfort |
| 13RB43 | United States | Kentucky | Limestone | Litchfield |
| 13RB4 | United States | Wisconsin | Dolomite | Byron |
| 13RB39 | United States | Illinois | Limestone | Columbia |
| 13RB38 | United States | Illinois | Limestone | Sagetown |
| 13RB33 | United States | Utah | Marble | Payson |
| 13RB24 | United States | Nebraska | Limestone | Glen Rock |
| 13RB23 | United States | Texas | Limestone | Austin |
| 13RB2 | United States | Illinois | Dolomite | Joilet |
| 13RB16 | United States | Iowa | Dolomite | Farley |
| 13RB12 | United States | Ohio | Dolomite | Greenfield |
| 13RB10 | United States | Ohio | Dolomite | Sandusky |
| 13RA47 | United States | Alabama | Limestone | Rockwood |
| 13RA46 | United States | Kentucky | Limestone | Trenton |
| 13RA44 | United States | Kentucky | Limestone | Pilot Knob |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 13RA41 | United States | Kentucky | Limestone | Princeton |
| 13RA25 | Cuba | Marble | Isle of Pines | |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 13RA20 | United States | Iowa | Limestone | Sigourney Station, Keokuk Co. |
| 13RA2 | United States | Illinois | Dolomite | Lemont |
| 13LB6 | United States | New York | Dolomite | Lockport |
| 13LB44 | United States | Kentucky | Limestone | Lincoln Co. |
| 13LB2 | United States | Illinois | Dolomite | Lemont |
| 13LB14 | United States | Iowa | Dolomite | Delphi |
| 13LB10 | United States | Ohio | Dolomite | Springfield |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 13LA40 | United States | Ohio | Limestone | Newtonville |
| 13LA37 | United States | New York | Limestone | Cottonwood Sta. |
| 13LA20 | United States | Iowa | Coral | Iowa City |
| 13LA2 | United States | Illinois | Dolomite | Lemont |
| 13LA16 | United States | Iowa | Limestone | Fort Dodge |
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 13LA11 | United States | Ohio | Limestone | Piqua River |
| 12RB40 | United States | Alabama | Limestone | Turks Cave |
| 12RB36 | United States | Indiana | Limestone | Bedford |
| 12RB14 | United States | Missouri | Dolomite | St. Louis |
| 12RA4 | United States | Illinois | Limestone | Quincy |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 12RA34 | United States | Indiana | Limestone | Oakalla |
| 12RA33 | United States | Indiana | Limestone | Spencer |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 12RA30 | United States | Illinois | Limestone | Joliet |
| 12RA3 | United States | Illinois | Dolomite | Chicago |
| 12RA29 | United States | Ohio | Marble | Spring Mills |
| 12RA16 | United States | Iowa | Dolomite | Farley |
| 12RA11 | United States | Kentucky | Limestone | Lagrange |
| 12RA1 | United States | Indiana | Limestone | Bedford |
| 12LB35 | United States | Indiana | Limestone | Bedford |
| 12LA37 | United States | Alabama | Limestone | Trinity |