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Stone description: light gray
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 7La18 | United States | Pennsylvania | Quartzite | Mapleton |
| 9LA13 | United States | Kansas | Limestone | Manhattan |
| 10LB44 | United States | New Hampshire | Granite | Manchester |
| 14LB15 | United States | Iowa | Dolomite | Manchester |
| 5RB25 | United States | North Carolina | Granite | Louisburg |
| 13LB6 | United States | New York | Dolomite | Lockport |
| 8LA30 | United States | New York | Sandstone | Lockport |
| 13RB43 | United States | Kentucky | Limestone | Litchfield |
| 6LA26 | United States | Maine | Granite | Lincolnville |
| 13LB44 | United States | Kentucky | Limestone | Lincoln Co. |
| 13LA2 | United States | Illinois | Dolomite | Lemont |
| 11RA3 | United States | Illinois | Dolomite | Lemont |
| 13LB2 | United States | Illinois | Dolomite | Lemont |
| 13RA2 | United States | Illinois | Dolomite | Lemont |
| 13rb46 | United States | Alabama | Limestone | Leighton |
| 6RA11 | United States | Pennsylvania | Sandstone | Layton Station Fayette Co. |
| 5LB32 | United States | Colorado | Granite | Lawson |
| 7RA44 | United States | New Mexico | Sandstone | Las Vegas |
| 14LB43 | United States | Nebraska | Limestone | LaPlatte |
| 11RA14 | United States | Iowa | Dolomite | Lansing |
| 11La17 | United States | Iowa | Dolomite | Lansing |
| 6RA20 | United States | Ohio | Sandstone | Lancaster |
| 12RA11 | United States | Kentucky | Limestone | Lagrange |
| 11LA24 | United States | Tennessee | Marble | Knoxville |
| 8LA12 | United States | Illinois | Limestone | Kinderhook |
| 9La10 | United States | Iowa | Limestone | Keosauque Station |
| 6RB44 | United States | New Hampshire | Granite | Keene |
| 14RB4 | United States | Illinois | Dolomite | Kankakee |
| 8RA12 | United States | Illinois | Limestone | Jonesborough |
| 12LA32 | United States | Illinois | Limestone | Jonesborough |
| 12RA30 | United States | Illinois | Limestone | Joliet |
| 12LA31 | United States | Illinois | Limestone | Joliet |
| 13RB2 | United States | Illinois | Dolomite | Joilet |
| 11RB1 | United States | Illinois | Dolomite | Joilet |
| 14LA3 | United States | Illinois | Dolomite | Joilet |
| 12LA3 | United States | Illinois | Dolomite | Joilet |
| 14RA2 | United States | Illinois | Dolomite | Joilet |
| 6RA10 | United States | Pennsylvania | Sandstone | Johnstown |
| 11LA12 | United States | Missouri | Dolomite | Jefferson City |
| 14LA46 | Portugal | Limestone | Janianes, Coimbra | |
| 6RA19 | United States | Pennsylvania | Quartzite | Jacksonwald |
| 10RA29 | Mexico | Andesite | Ixtapalapa | |
| 13RA25 | Cuba | Marble | Isle of Pines | |
| 13LA20 | United States | Iowa | Coral | Iowa City |
| 6RB1 | United States | Pennsylvania | Quartzite | Huntingdon |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 10RB7 | United States | Missouri | Limestone | Hannibal |
| 10RB25 | United States | Maine | Granite | Hallowell |
| 8LA15 | United States | Indiana | Limestone | Greenscastle |
| 12LA1 | United States | Indiana | Dolomite | Greensburgh |
| 13RB12 | United States | Ohio | Dolomite | Greenfield |
| 7LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 13RB24 | United States | Nebraska | Limestone | Glen Rock |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 9LA39 | United States | Indiana | Sandstone | French Lick Twp. |
| 5LB12 | United States | Massachusetts | Granite | Freetown |
| 13LA12 | United States | Ohio | Dolomite | Freemont |
| 11RB28 | United States | Virginia | Granite | Fredericksburg |
| 14RB16 | United States | Iowa | Dolomite | Franklin |
| 8RA17 | United States | Kentucky | Limestone | Franklin |
| 14RA16 | United States | Iowa | Dolomite | Franklin |
| 14RB45 | United States | Kentucky | Limestone | Frankfort |
| 13RB44 | United States | Kentucky | Limestone | Frankfort |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 8LA13 | United States | Indiana | Limestone | Fort Ritner |
| 13LA16 | United States | Iowa | Limestone | Fort Dodge |
| 7LA31 | United States | Colorado | Sandstone | Fort Collins |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 11LB2 | United States | Wisconsin | Dolomite | Fon du Lac |
| 11LA8 | United States | Kansas | Limestone | Florence |
| 2L10 | United States | Vermont | Marble | Florence |
| 2L12 | United States | Vermont | Marble | Florence |
| 2L2 | United States | Vermont | Marble | Florence |
| 2L3 | United States | Vermont | Marble | Florence |
| 2L9 | United States | Vermont | Marble | Florence |
| 2R10 | United States | Vermont | Marble | Florence |
| 2R12 | United States | Vermont | Marble | Florence |
| 2R2 | United States | Vermont | Marble | Florence |
| 2R3 | United States | Vermont | Marble | Florence |
| 2R9 | United States | Vermont | Marble | Florence |
| 13RB16 | United States | Iowa | Dolomite | Farley |
| 12RA16 | United States | Iowa | Dolomite | Farley |
| 8RB15 | United States | Utah | Limestone | Ephriam |
| 8RA16 | United States | Indiana | Limestone | Ellettsville |
| 11LA23 | United States | Kansas | Limestone | Eldorado |
| 10RA23 | United States | Kansas | Limestone | Eldorado |
| 14LA45 | Portugal | Limestone | Ega, Coimbra | |
| 14LA5 | United States | Wisconsin | Dolomite | Eden |
| 8RA24 | United States | North Carolina | Sandstone | Durham |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 7ra8 | United States | Alabama | Limestone | Dickson |
| 13LB14 | United States | Iowa | Dolomite | Delphi |
| 11RA13 | United States | Missouri | Dolomite | De Soto |
| 14LB13 | United States | Ohio | Limestone | Dayton |
| 5RB26 | United States | Maryland | Conglomerate | Cumberland |
| 13LA37 | United States | New York | Limestone | Cottonwood Sta. |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 8RB19 | United States | Pennsylvania | Sandstone | Corry |
| 9RB13 | United States | Iowa | Limestone | Conrad |
| 6RA4 | United States | Pennsylvania | Sandstone | Connellsville |