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Stone description: fine grain
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 6RA19 | United States | Pennsylvania | Quartzite | Jacksonwald |
| 6Lb19 | United States | Pennsylvania | Diabase | Jacksonwald |
| 9Lb34 | United States | Oregon | Sandstone | Jacksonville |
| 11RB33 | United States | Oregon | Sandstone | Jacksonville |
| 13LB42 | United States | Illinois | Limestone | Iuka |
| 10LB32 | United States | New York | Sandstone | Ithaca |
| 8RB44 | United States | Michigan | Sandstone | Isle Royale |
| 10LA23 | Cuba | Marble | Isle of Pines | |
| 9RB7 | United States | Vermont | Marble | Isle LaMotte |
| 10RA6 | United States | Vermont | Marble | Isle LaMotte |
| 14LB2 | United States | Vermont | Marble | Isle LaMotte |
| 12RB2 | United States | Vermont | Marble | Isle LaMotte |
| 3L16 | United States | Vermont | Marble | Isle LaMotte |
| 10RA16 | United States | Vermont | Marble | Isle LaMotte |
| 3R16 | United States | Vermont | Marble | Isle LaMotte |
| 13La1 | United States | Vermont | Limestone | Isle La Motte |
| 14LB26 | United States | Kansas | Limestone | Irving |
| 11LB20 | United States | Iowa | Limestone | Iowa Falls |
| 10LA20 | United States | Iowa | Limestone | Iowa Falls |
| 13LA20 | United States | Iowa | Coral | Iowa City |
| 13LB21 | United States | Iowa | Limestone | Independence |
| 9RB12 | United States | Iowa | Limestone | Independence |
| 14LA47 | Portugal | Limestone | Ilhastro, Coimbra | |
| 8RB38 | United States | Maryland | Gneiss | Ilchester |
| 5RA2 | United States | Ohio | Sandstone | Iberia |
| 14LB39 | United States | Pennsylvania | Limestone | Hyndman |
| 6RB1 | United States | Pennsylvania | Quartzite | Huntingdon |
| 12RB32 | United States | Pennsylvania | Limestone | Huntingdon |
| 9RB26 | United States | New York | Sandstone | Huntersland |
| 7La12 | United States | Pennsylvania | Limestone | Hummelstown |
| 12RB16 | United States | Iowa | Dolomite | Humbolt |
| 13RA13 | United States | Iowa | Dolomite | Humbolt |
| 8LB28 | United States | New York | Sandstone | Hulberton |
| 13RA38 | United States | Pennsylvania | Marble | Howellsville |
| 13RA5 | United States | New York | Limestone | Howe's Cave |
| 14RB7 | United States | New York | Limestone | Howe's Cave |
| 11RB5 | United States | New York | Limestone | Howe's Cave |
| 8RA37 | United States | Missouri | Sandstone | Howard Co. |
| 7RA22 | United States | North Carolina | Quartzite | Hot Springs |
| 12RB13 | United States | Ohio | Dolomite | Holmes Twp. Crawford C. |
| 5RB31 | United States | Georgia | Marble | Holly Spgs. |
| 7La32 | United States | Minnesota | Sandstone | Hinckley |
| 8RB26 | United States | North Carolina | Granite | Hillsboro |
| 5RA37 | Mexico | Andesite | Hildalgo State | |
| 6LA29 | United States | New York | Sandstone | High Woods |
| 11RB14 | United States | Missouri | Dolomite | Hermann |
| 10RB8 | United States | Missouri | Limestone | Herculaneum |
| 11LA32 | United States | Montana | Marble | Helena |
| 12LB13 | United States | Montana | Marble | Helena |
| 8LB15 | United States | Wisconsin | Limestone | Hayton |
| 6LB29 | United States | New York | Gneiss | Hastings |
| 12RA18 | United States | Virginia | Marble | Harrisonburg |
| 7RA13 | United States | Pennsylvania | Limestone | Harrisburg |
| 11LB6 | United States | Pennsylvania | Dolomite | Harrisburg |
| 8RB8 | United States | West Virginia | Marble | Harpers Ferry |
| 10RB25 | United States | Maine | Granite | Hallowell |
| 7La27 | United States | New York | Sandstone | Hallihan's Hill |
| 7LB33 | United States | Connecticut | Gneiss | Haddam |
| 10RB40 | United States | Maryland | Granite | Gwynn Falls |
| 9RA27 | United States | New York | Sandstone | Guilford Cntr. Chenango Co. |
| 8RA28 | United States | New York | Sandstone | Guilford |
| 6LA37 | United States | Connecticut | Granite | Groton |
| 9LB6 | Austria | Marble | Grisignana | |
| 10LA24 | United States | Kansas | Limestone | Grenola |
| 6LA36 | United States | Connecticut | Gneiss | Greenwich |
| 5La40 | United States | South Carolina | Granite | Greenville |
| 6RB5 | United States | Pennsylvania | Sandstone | Greenville |
| 9LB36 | United States | Alabama | Sandstone | Greensport |
| 6RA17 | United States | Pennsylvania | Sandstone | Greensburgh |
| 12LA1 | United States | Indiana | Dolomite | Greensburgh |
| 8RB23 | United States | North Carolina | Granite | Greensborough |
| 14LB11 | United States | Ohio | Dolomite | Greenfield |
| 5RA8 | United States | Ohio | Sandstone | Greenfield |
| 13RB12 | United States | Ohio | Dolomite | Greenfield |
| 6RA33 | United States | Colorado | Sandstone | Greeley |
| 11RB35 | United States | Montana | Sandstone | Great Falls |
| 7LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 5LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 10LB49 | United States | New Mexico | Serpentine | Grant County Gila River |
| 11RB43 | United States | New Mexico | Serpentine | Grant County Gila River |
| 11RB44 | United States | New Mexico | Serpentine | Grant County Gila River |
| 10RB50 | United States | New Mexico | Serpentine | Grant County Gila River |
| 7RA45 | United States | New Mexico | Serpentine | Grant County Gila River |
| 9LB42 | United States | Wisconsin | Sandstone | Grand Rapids |
| 13LA43 | United States | Kentucky | Limestone | Grahampton |
| 8La19 | United States | Pennsylvania | Diabase | Goldsboro |
| 6LB16 | United States | Pennsylvania | Diabase | Gettysburg |
| 9RA46 | Canada | Sandstone | Georgetown, Ontario | |
| 7RA23 | United States | North Carolina | Granite | Gastonia |
| 6RA36 | United States | Connecticut | Gneiss | Gastonbury |
| 12RB17 | United States | Iowa | Dolomite | Garrison |
| 12RA17 | United States | Iowa | Dolomite | Garrison |
| 12LA8 | United States | Minnesota | Dolomite | Frontenac |
| 9LB40 | United States | Indiana | Sandstone | French Lick Twp. |
| 9LA39 | United States | Indiana | Sandstone | French Lick Twp. |
| 10LB38 | United States | Colorado | Sandstone | Fremont Co.- Ark. River |
| 8RA2 | Portugal | Limestone | Freguesias, Coimbra | |
| 14RA40 | Portugal | Marble | Freguesias of S Miguel Coimbra | |
| 14LA40 | Portugal | Marble | Freguesias of S Miguel Coimbra | |
| 14LA43 | Portugal | Marble | Freguesias of S Miguel Coimbra |