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Stone description: compact
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 13LB39 | United States | Pennsylvania | Limestone | Paxton Station Dauphin Co. |
| 10Lb36 | United States | Kansas | Sandstone | Pawnee |
| 8La40 | United States | West Virginia | Sandstone | Parkersburg |
| 11LB21 | United States | Missouri | Limestone | Paris |
| 14LB38 | United States | Pennsylvania | Limestone | Palmyra |
| 9RA10 | United States | Iowa | Limestone | Ottumwa |
| 7LA3 | Hungary | Limestone | Oszlopp | |
| 12RB23 | United States | Kansas | Limestone | Oswego |
| 10LA5 | United States | Wisconsin | Dolomite | Oshkosh |
| 14LB14 | United States | Iowa | Dolomite | Osage Sta. |
| 11RA16 | United States | Iowa | Dolomite | Osage Sta. |
| 12LA9 | United States | Pennsylvania | Dolomite | Orbisonia |
| 10LA7 | United States | New York | Limestone | Onondaga |
| 7La26 | United States | New York | Sandstone | Oneonta |
| 6La14 | United States | Pennsylvania | Sandstone | Olyphant |
| 8LA45 | United States | Washington | Sandstone | Olymphia |
| 11RA15 | United States | Iowa | Dolomite | Olin |
| 6LA28 | United States | New York | Sandstone | Olean |
| 11RA39 | United States | Tennessee | Conglomerate | Ocoee River Polk Co. |
| 9RB37 | United States | Oregon | Sandstone | Oakland |
| 14RB12 | United States | Indiana | Limestone | Oakdale |
| 12RA34 | United States | Indiana | Limestone | Oakalla |
| 12LB2 | United States | North Carolina | Dolomite | Nottla |
| 10LA6 | United States | Tennessee | Limestone | Nolensville Pike |
| 6Lb5 | United States | Pennsylvania | Sandstone | Nicholson |
| 13LA40 | United States | Ohio | Limestone | Newtonville |
| 13LB12 | United States | New Jersey | Dolomite | Newton |
| 27WE | United States | Florida | Limestone | New Port Richey |
| S2-129 | United States | Florida | Limestone | New Port Richey |
| 12LB10 | United States | Ohio | Dolomite | New Paris |
| 9RA5 | United States | Missouri | Limestone | New London |
| 9RB43 | Canada | Sandstone | Nepigon Bay, Ontario | |
| 11RA22 | United States | Missouri | Limestone | Neosho |
| 14RA6 | United States | Wisconsin | Dolomite | Neenah |
| 13LB1 | United States | Virginia | Limestone | Near National Bridge |
| 9LA1 | Portugal | Limestone | Nazareth, Leiria | |
| 9RB1 | Portugal | Limestone | Nazareth, Leiria | |
| 12RA23 | United States | Tennessee | Limestone | Nashville |
| 14RA27 | United States | Tennessee | Limestone | Nashville |
| 13LA27 | United States | Tennessee | Limestone | Nashville |
| 11RA28 | United States | Tennessee | Limestone | Nashville |
| 13RB41 | United States | Indiana | Limestone | N. Vernon |
| 5LB7 | United States | Ohio | Sandstone | N. Bloomfield |
| 13RB36 | United States | Pennsylvania | Limestone | N. Annville |
| 13RB37 | United States | Pennsylvania | Limestone | Myerstown |
| 12RB5 | United States | Tennessee | Limestone | Murfreesborough |
| 9LA14 | Spain | Limestone | Murcia, Murcia | |
| 9RA37 | Spain | Sandstone | Murcia | |
| 14LA20 | United States | Iowa | Limestone | Mt. Pleasant |
| 13LB20 | United States | Iowa | Limestone | Mt. Pleasant |
| 9RB9 | United States | Iowa | Limestone | Mt. Pleasant |
| 6LB28 | United States | New York | Sandstone | Mt. Pleasant |
| 9LB16 | United States | Maryland | Limestone | Mt. Pleasant |
| 5LB42 | United States | New Jersey | Conglomerate | Morristown |
| 13RB27 | United States | Colorado | Limestone | Morrison |
| 13RB8 | United States | Pennsylvania | Limestone | Morrell |
| 6LB38 | Mexico | Tuff | Morelos State | |
| 14LB35 | Spain | Limestone | Morata, Saragossa | |
| 13RA26 | Canada | Limestone | Montreal region | |
| 8RA9 | Canada | Limestone | Montreal | |
| 14LB1 | United States | Indiana | Dolomite | Montpelier |
| 11RA19 | United States | Iowa | Limestone | Montour |
| 14RB23 | United States | Iowa | Limestone | Montour |
| 14LB17 | United States | Iowa | Dolomite | Monticello |
| 10LB17 | United States | Pennsylvania | Soapstone | Montgomery Co. |
| 7RB16 | United States | Pennsylvania | Soapstone | Montgomery Co. |
| 14RB8 | United States | Minnesota | Limestone | Minneapolis |
| 9LA16 | United States | Minnesota | Limestone | Minneapolis |
| 12RA6 | United States | Wisconsin | Dolomite | Milwaukee |
| 13RA4 | United States | Wisconsin | Dolomite | Milwaukee |
| 11RA10 | United States | Ohio | Dolomite | Milton Twp. Woods Co. |
| 12RB33 | United States | Ohio | Limestone | Millersburg |
| 14RA10 | United States | Pennsylvania | Dolomite | Mill Lane Chester Co. |
| 6La7 | United States | Pennsylvania | Sandstone | Meshoppen |
| 8RB17 | United States | Pennsylvania | Limestone | Mertztown |
| 6RA5 | United States | Pennsylvania | Sandstone | Mauch Chunk |
| 6LB2 | United States | Pennsylvania | Sandstone | Mauch Chunk |
| 14RA23 | United States | Iowa | Limestone | Mason City |
| 13LB13 | United States | Iowa | Limestone | Mason City |
| 11RB10 | United States | Kansas | Dolomite | Marysville |
| 9LA45 | Canada | Sandstone | Mary's Point, New Brunswick | |
| 6RA42 | United States | New Jersey | Sandstone | Martinville |
| 11RB12 | United States | Missouri | Dolomite | Marshfield |
| 12RA21 | United States | Iowa | Limestone | Marshalltown |
| 12LA15 | United States | Iowa | Dolomite | Marshalltown |
| 7LA44 | United States | Michigan | Sandstone | Marquette |
| 10RB49 | United States | Wisconsin | Quartz | Marquette |
| 7RB27 | United States | Kentucky | Sandstone | Marion |
| 14LA21 | United States | Iowa | Limestone | Marble Rock |
| 10LB13 | United States | Iowa | Limestone | Marble Rock |
| 7La18 | United States | Pennsylvania | Quartzite | Mapleton |
| 12RB6 | United States | Wisconsin | Dolomite | Manitowoc |
| 9LA13 | United States | Kansas | Limestone | Manhattan |
| 14LB15 | United States | Iowa | Dolomite | Manchester |
| S2-9 | United States | New York | Sandstone | Malone |
| 6RA1 | United States | Pennsylvania | Sandstone | Mainesburgh |
| 13RA19 | United States | Iowa | Limestone | Macedonia |
| 8RA34 | United States | Minnesota | Sandstone | Luverne |
| 8RA19 | United States | Pennsylvania | Sandstone | Lumberton |
| 12RB11 | United States | Kentucky | Limestone | Lulbergrude Cr. Clark Co. |