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Stone description: fine grain
| Wall Number | Country | State | Classification | Source Sort descending |
|---|---|---|---|---|
| 11RA15 | United States | Iowa | Dolomite | Olin |
| 7La26 | United States | New York | Sandstone | Oneonta |
| 12LA9 | United States | Pennsylvania | Dolomite | Orbisonia |
| 10LA5 | United States | Wisconsin | Dolomite | Oshkosh |
| 14LB38 | United States | Pennsylvania | Limestone | Palmyra |
| 9RB39 | United States | Indiana | Sandstone | Paoli |
| 11LB21 | United States | Missouri | Limestone | Paris |
| 8La40 | United States | West Virginia | Sandstone | Parkersburg |
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 10RA32 | United States | Kansas | Sandstone | Parsons |
| 13LB39 | United States | Pennsylvania | Limestone | Paxton Station Dauphin Co. |
| 13RB33 | United States | Utah | Marble | Payson |
| 11RB25 | United States | Utah | Limestone | Payson |
| 7Lb30 | United States | Texas | Sandstone | Pecos |
| 10LB33 | United States | Texas | Sandstone | Pecos |
| 8La32 | United States | Texas | Sandstone | Pecos |
| 7La30 | United States | Texas | Sandstone | Pecos |
| 14RB21 | United States | Iowa | Limestone | Pella Station, Marion Co. |
| 5RA29 | United States | California | Basalt | Petaluma |
| 6LB18 | United States | Pennsylvania | Gneiss | Philadelphia |
| 6RB17 | United States | Pennsylvania | Gneiss | Philadelphia |
| 8LB30 | United States | New York | Sandstone | Phoenicia |
| 9RA29 | United States | New York | Sandstone | Phoenicia |
| 7LB27 | United States | New York | Sandstone | Phoenicia |
| 5LA5 | United States | Ohio | Sandstone | Piketon |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 9LA40 | United States | Illinois | Sandstone | Pinckneyville |
| 14RB38 | United States | Pennsylvania | Marble | Pine Grove Schuylkill Co. |
| 14LB47 | United States | Kentucky | Limestone | Pineville |
| 8RA31 | United States | Kentucky | Sandstone | Pineville |
| 14LB45 | United States | Kentucky | Limestone | Pineville |
| 14RB40 | United States | Ohio | Limestone | Piqua |
| 13LA11 | United States | Ohio | Limestone | Piqua River |
| 9LA4 | United States | Colorado | Limestone | Pitkin |
| 13RB26 | United States | Colorado | Limestone | Pitkin |
| 14RB19 | United States | Vermont | Marble | Pittsford |
| 6LB1 | United States | Pennsylvania | Sandstone | Plains |
| 11LA21 | United States | Missouri | Limestone | Pleasant Hill |
| 7LB39 | United States | New Jersey | Sandstone | Pleasant Val. |
| 6LA43 | United States | New Jersey | Sandstone | Pleasant Val. |
| 13LA8 | United States | Pennsylvania | Dolomite | Plymouth |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 9LA20 | United States | Pennsylvania | Sandstone | Pond Eddy |
| 8RA1 | Portugal | Marble | Ponde do Espinal, Coimbra | |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |
| 7RA33 | United States | Connecticut | Sandstone | Portland |
| 8RA35 | United States | Connecticut | Sandstone | Portland |
| 7La2 | Portugal | Limestone | Porto Barrao, Coimbra | |
| 7Lb19 | United States | Ohio | Sandstone | Portsmouth |
| 8LA20 | United States | Ohio | Sandstone | Portsmouth |
| 13RB9 | United States | Pennsylvania | Dolomite | Potts Landing Berk's Co. |
| 7LB24 | United States | Maine | Granite | Pownal |
| 12LB29 | United States | Wisconsin | Limestone | Prairie du Chien |
| 11RB38 | United States | New Jersey | Sandstone | Princetown |
| 6LB6 | United States | Pennsylvania | Sandstone | Prospect |
| 12LA11 | United States | Ohio | Dolomite | Pt. Marblehead |
| 5RB37 | Mexico | Basalt | Puebla State | |
| 5LB36 | Mexico | Basalt | Puebla State | |
| 9RB28 | United States | New York | Sandstone | Pultney |
| 8RA15 | United States | Indiana | Limestone | Putnamville |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 13RB15 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 8LB42 | United States | New Jersey | Sandstone | Quarryville |
| 6LA18 | United States | Pennsylvania | Sandstone | Queens Run Clinton Co. |
| 13LA42 | United States | Illinois | Limestone | Quincy |
| 5RB10 | United States | Massachusetts | Granite | Quincy Adams |
| 13LB4 | United States | Wisconsin | Dolomite | Racine |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 8LB25 | United States | North Carolina | Gneiss | Raleigh |
| 9La32 | United States | Texas | Sandstone | Range |
| 8La41 | United States | Mississippi | Sandstone | Rankin Co. |
| 9RA40 | United States | Wyoming | Diorite | Raw Hide Buttes |
| 9RA39 | United States | Wyoming | Sandstone | Rawlins |
| 14RA8 | United States | Minnesota | Dolomite | Reading |
| 6RB14 | United States | Pennsylvania | Diabase | Reading |
| 11LB7 | United States | Pennsylvania | Dolomite | Reading |
| 11Lb32 | United States | Utah | Sandstone | Red Butte |
| 10RB19 | United States | North Carolina | Marble | Red Marble Gap |
| 11LA5 | United States | Minnesota | Limestone | Red Wing |
| 8LB29 | United States | New York | Sandstone | Reedsville |
| 1R4 | United States | Connecticut | Granite | Reynold's Bridge |
| 13RA37 | United States | Pennsylvania | Limestone | Richland Station Lebanon Co. |
| 8LB17 | United States | Pennsylvania | Limestone | Richland Station Lebanon Co. |
| 10RA12 | United States | Kansas | Dolomite | Richland Twp. Butler Co. |
| 10RB17 | Spain | Limestone | Ricla, Saragossa | |
| 13LA35 | Spain | Limestone | Ricla, Saragossa | |
| 13LA4 | United States | Wisconsin | Dolomite | River Falls Pierce Co. |
| 8RB7 | United States | Nebraska | Limestone | Roca |
| 8LB6 | United States | Nebraska | Limestone | Roca |
| 11RA23 | United States | Nebraska | Limestone | Roca |
| 11RA7 | United States | New York | Dolomite | Rochester |
| 5LA42 | United States | New Jersey | Diabase | Rock Church |
| 12LB23 | United States | Kansas | Limestone | Rock Twp. Butler Co. |
| 5LA29 | United States | California | Granite | Rocklin |
| 8LB37 | United States | Missouri | Sandstone | Rockville |
| 5LA15 | United States | Ohio | Sandstone | Rockville |
| 13RA47 | United States | Alabama | Limestone | Rockwood |
| 2c | United States | Alabama | Limestone | Rockwood |
| 16C | United States | Alabama | Limestone | Rockwood |
| 7LA24 | United States | Maine | Granite | Round Pond |