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Stone description: fine grain
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 6LA43 | United States | New Jersey | Sandstone | Pleasant Val. |
| 7LB39 | United States | New Jersey | Sandstone | Pleasant Val. |
| 11LA21 | United States | Missouri | Limestone | Pleasant Hill |
| 6LB1 | United States | Pennsylvania | Sandstone | Plains |
| 14RB19 | United States | Vermont | Marble | Pittsford |
| 9LA4 | United States | Colorado | Limestone | Pitkin |
| 13RB26 | United States | Colorado | Limestone | Pitkin |
| 13LA11 | United States | Ohio | Limestone | Piqua River |
| 14RB40 | United States | Ohio | Limestone | Piqua |
| 14LB45 | United States | Kentucky | Limestone | Pineville |
| 14LB47 | United States | Kentucky | Limestone | Pineville |
| 8RA31 | United States | Kentucky | Sandstone | Pineville |
| 14RB38 | United States | Pennsylvania | Marble | Pine Grove Schuylkill Co. |
| 9LA40 | United States | Illinois | Sandstone | Pinckneyville |
| 5LA5 | United States | Ohio | Sandstone | Piketon |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 8LB30 | United States | New York | Sandstone | Phoenicia |
| 9RA29 | United States | New York | Sandstone | Phoenicia |
| 7LB27 | United States | New York | Sandstone | Phoenicia |
| 6LB18 | United States | Pennsylvania | Gneiss | Philadelphia |
| 6RB17 | United States | Pennsylvania | Gneiss | Philadelphia |
| 5RA29 | United States | California | Basalt | Petaluma |
| 14RB21 | United States | Iowa | Limestone | Pella Station, Marion Co. |
| 7Lb30 | United States | Texas | Sandstone | Pecos |
| 10LB33 | United States | Texas | Sandstone | Pecos |
| 8La32 | United States | Texas | Sandstone | Pecos |
| 7La30 | United States | Texas | Sandstone | Pecos |
| 13RB33 | United States | Utah | Marble | Payson |
| 11RB25 | United States | Utah | Limestone | Payson |
| 13LB39 | United States | Pennsylvania | Limestone | Paxton Station Dauphin Co. |
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 10RA32 | United States | Kansas | Sandstone | Parsons |
| 8La40 | United States | West Virginia | Sandstone | Parkersburg |
| 11LB21 | United States | Missouri | Limestone | Paris |
| 9RB39 | United States | Indiana | Sandstone | Paoli |
| 14LB38 | United States | Pennsylvania | Limestone | Palmyra |
| 10LA5 | United States | Wisconsin | Dolomite | Oshkosh |
| 12LA9 | United States | Pennsylvania | Dolomite | Orbisonia |
| 7La26 | United States | New York | Sandstone | Oneonta |
| 11RA15 | United States | Iowa | Dolomite | Olin |
| 6LA28 | United States | New York | Sandstone | Olean |
| 6LB3 | United States | Pennsylvania | Sandstone | Oil City |
| 5LB30 | United States | Georgia | Granite | Ogelsby |
| 11RA39 | United States | Tennessee | Conglomerate | Ocoee River Polk Co. |
| 6RB37 | Mexico | Tuff | Oaxaca State | |
| 6LA38 | Mexico | Tuff | Oaxaca State | |
| 9RB37 | United States | Oregon | Sandstone | Oakland |
| 14RB12 | United States | Indiana | Limestone | Oakdale |
| 12RA34 | United States | Indiana | Limestone | Oakalla |
| 7ra10 | United States | Arkansas | Marble | Nr. Batesville |
| 12LB2 | United States | North Carolina | Dolomite | Nottla |
| 5La2 | United States | Ohio | Sandstone | Norwalk |
| 1L4 | United States | Connecticut | Granite | Norwalk |
| 10LB25 | United States | Massachusetts | Gneiss | Northfield |
| 5B | United States | Maine | Granite | North Jay |
| 10LA6 | United States | Tennessee | Limestone | Nolensville Pike |
| 8RA4 | United States | Tennessee | Limestone | Nolensville Pike |
| 6Lb5 | United States | Pennsylvania | Sandstone | Nicholson |
| 5RA46 | United States | Rhode Island | Granite | Niantic |
| 13LA40 | United States | Ohio | Limestone | Newtonville |
| 13LB12 | United States | New Jersey | Dolomite | Newton |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 5RA41 | United States | South Carolina | Granite | Newberry Co. |
| 7LB40 | United States | New Jersey | Sandstone | Newark |
| 6LA20 | United States | Ohio | Sandstone | Newark |
| 8LA42 | United States | New Jersey | Sandstone | Newark |
| 9RB16 | United States | Maryland | Marble | New Windsor |
| 14RA19 | Australia | Marble | New South Wales | |
| 14LA19 | Australia | Marble | New South Wales | |
| 12LB10 | United States | Ohio | Dolomite | New Paris |
| 9RA5 | United States | Missouri | Limestone | New London |
| 13RA1 | United States | Vermont | Marble | New Haven |
| 5RB35 | United States | Connecticut | Diabase | New Haven |
| 8RA36 | United States | Missouri | Sandstone | Nevada |
| 5LB26 | Austria | Granite | Neuhaus | |
| 9RB43 | Canada | Sandstone | Nepigon Bay, Ontario | |
| 10RA33 | United States | Kansas | Sandstone | Neodesha |
| 14RA6 | United States | Wisconsin | Dolomite | Neenah |
| 11RB27 | United States | Virginia | Granite | Near Richmond |
| 13LB1 | United States | Virginia | Limestone | Near National Bridge |
| 10RA1 | United States | Virginia | Marble | Near National Bridge |
| 9RB38 | United States | Oregon | Sandstone | Near Albany |
| 9LA1 | Portugal | Limestone | Nazareth, Leiria | |
| 9RB1 | Portugal | Limestone | Nazareth, Leiria | |
| 12RA23 | United States | Tennessee | Limestone | Nashville |
| 12LB34 | United States | North Carolina | Marble | Nantahala |
| 11RB32 | United States | Virginia | Granite | Namozine Dist. |
| 11LA35 | United States | Virginia | Granite | Namozine Dist. |
| 8RB36 | Scotland | Sandstone | Nairn | |
| 13RB41 | United States | Indiana | Limestone | N. Vernon |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 5La35 | United States | Connecticut | Gneiss | N. Bridgeport |
| 5LB7 | United States | Ohio | Sandstone | N. Bloomfield |
| 13RB36 | United States | Pennsylvania | Limestone | N. Annville |
| 1R3 | United States | Connecticut | Granite | Mystic Bridge |
| 13RB37 | United States | Pennsylvania | Limestone | Myerstown |
| 9LB4 | United States | North Carolina | Marble | Murphy |
| 12RB5 | United States | Tennessee | Limestone | Murfreesborough |
| 9LA14 | Spain | Limestone | Murcia, Murcia | |
| 9RA37 | Spain | Sandstone | Murcia |