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Stone description: porous
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 6RB21 | United States | Ohio | Sandstone | Marietta |
| 8LA43 | United States | Montana | Sandstone | Columbus |
| 9LA5 | United States | Missouri | Limestone | Barrett's Station |
| 11EE | United States | Ohio | Sandstone | Glenmont |
| 5LA1 | United States | Ohio | Sandstone | Mt. Gilead |
| 6LA43 | United States | New Jersey | Sandstone | Pleasant Val. |
| 7RA20 | United States | Ohio | Sandstone | Elyria |
| 8RB15 | United States | Utah | Limestone | Ephriam |
| 10C | United States | Indiana | Limestone | Bloomington |
| 12LA10 | United States | Ohio | Dolomite | Euphemia |
| 14RQ | United States | Connecticut | Sandstone | Fair Haven |
| 5RA19 | United States | Ohio | Sandstone | Mansfield |
| 6RB29 | United States | Kentucky | Sandstone | Kirkmansville |
| 8La47 | United States | New Mexico | Sandstone | Las Vegas |
| 9Lb17 | United States | Pennsylvania | Sandstone | Homewood |
| 11LA15 | United States | Iowa | Dolomite | Clinton |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |
| 7RA28 | United States | Kentucky | Sandstone | Cloveport |
| 8RB16 | United States | Wisconsin | Limestone | Madison |
| 9RA9 | United States | Iowa | Limestone | Tracey Station, Marion Co. |
| 10EE | United States | Ohio | Sandstone | Amherst |
| 12LA11 | United States | Ohio | Dolomite | Pt. Marblehead |
| 14WE | United States | Ohio | Sandstone | Amherst |
| 5RA2 | United States | Ohio | Sandstone | Iberia |
| 6RB3 | United States | Pennsylvania | Sandstone | Kiasola Station Beaver Co. |
| 8LB20 | United States | Ohio | Sandstone | Berea |
| 9LB21 | United States | Ohio | Sandstone | Twinsburg |
| 11LA16 | United States | Iowa | Dolomite | Anamosa |
| 13RA43 | United States | Kentucky | Limestone | Hopkinsville |
| 5LA11 | United States | Ohio | Sandstone | Windham |
| 6LA47 | United States | Louisiana | Sandstone | Unknown |
| 7RA29 | United States | California | Sandstone | Angel Island |
| 8RB18 | United States | Pennsylvania | Sandstone | Fayette Station Fayette Co. |
| 9RB20 | United States | Ohio | Sandstone | Harmer |
| 13RA35 | Spain | Limestone | Murcia, Murcia | |
| 8RB36 | Scotland | Sandstone | Nairn | |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 11LB28 | Scotland | Sandstone | Ballochmyle | |
| 6RB37 | Mexico | Tuff | Oaxaca State | |
| 10LA38 | Mexico | Dacite | Mexico State | |
| 13LB29 | Italy | Limestone | Leghorn |