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Stone description: light gray
| Wall Number Sort ascending | Country | State | Classification | Source |
|---|---|---|---|---|
| 12La36 | United States | Kentucky | Limestone | Bloomfield |
| 12LA35 | United States | Indiana | Limestone | Spencer |
| 12LA32 | United States | Illinois | Limestone | Jonesborough |
| 12LA31 | United States | Illinois | Limestone | Joliet |
| 12LA3 | United States | Illinois | Dolomite | Joilet |
| 12LA15 | United States | Iowa | Dolomite | Marshalltown |
| 12LA11 | United States | Ohio | Dolomite | Pt. Marblehead |
| 12LA1 | United States | Indiana | Dolomite | Greensburgh |
| 11RB28 | United States | Virginia | Granite | Fredericksburg |
| 11RB10 | United States | Kansas | Dolomite | Marysville |
| 11RB1 | United States | Illinois | Dolomite | Joilet |
| 11RA3 | United States | Illinois | Dolomite | Lemont |
| 11RA29 | United States | Tennessee | Limestone | Sherwood Station |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 11RA23 | United States | Nebraska | Limestone | Roca |
| 11RA21 | United States | Missouri | Limestone | St. Louis |
| 11RA20 | United States | Texas | Marble | San Saba |
| 11RA14 | United States | Iowa | Dolomite | Lansing |
| 11RA13 | United States | Missouri | Dolomite | De Soto |
| 11LB45 | United States | Kentucky | Sandstone | Whitney Co. |
| 11LB2 | United States | Wisconsin | Dolomite | Fon du Lac |
| 11LB14 | United States | Missouri | Dolomite | Stoutland |
| 11LA8 | United States | Kansas | Limestone | Florence |
| 11LA7 | United States | Pennsylvania | Marble | Cedar Hollow Lime Co. |
| 11LA24 | United States | Tennessee | Marble | Knoxville |
| 11LA23 | United States | Kansas | Limestone | Eldorado |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 11La17 | United States | Iowa | Dolomite | Lansing |
| 11LA12 | United States | Missouri | Dolomite | Jefferson City |
| 11La1 | United States | Indiana | Dolomite | St. Paul |
| 11B | United States | New Hampshire | Granite | Concord |
| 10RB7 | United States | Missouri | Limestone | Hannibal |
| 10RB45 | United States | New Hampshire | Granite | Mason |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 10RB25 | United States | Maine | Granite | Hallowell |
| 10RB14 | United States | Indiana | Limestone | Stinesville |
| 10RB13 | United States | Iowa | Limestone | Blansett |
| 10RA9 | United States | Wisconsin | Dolomite | Byron |
| 10RA40 | United States | New Hampshire | Granite | Milford |
| 10RA37 | United States | New Hampshire | Granite | Mason |
| 10RA35 | United States | New Hampshire | Granite | Roxbury |
| 10RA29 | Mexico | Andesite | Ixtapalapa | |
| 10RA23 | United States | Kansas | Limestone | Eldorado |
| 10Lb46 | United States | Wisconsin | Sandstone | Mauston |
| 10LB44 | United States | New Hampshire | Granite | Manchester |
| 10LB39 | Mexico | Pyrophyllite | Sonora State | |
| 10LB34 | United States | Connecticut | Gneiss | Roxbury |
| 10LA49 | United States | Michigan | Quartzite | Vulcan |
| 10La21 | United States | Missouri | Limestone | Springfield |