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Stone description: porous
| Wall Number | Country Sort ascending | State | Classification | Source |
|---|---|---|---|---|
| 9RA43 | United States | Idaho | Sandstone | Boise |
| 11RB45 | United States | New Mexico | Sandstone | Las Vegas |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 5RA15 | United States | Ohio | Sandstone | Cambridge |
| 6RB2 | United States | Pennsylvania | Sandstone | Franklin |
| 8LA39 | United States | Kansas | Sandstone | Oswego |
| 9LA42 | United States | Illinois | Sandstone | Chester |
| 10WE | United States | Ohio | Sandstone | Amherst |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 4RQ | United States | Ohio | Sandstone | Amherst |
| 6La4 | United States | Pennsylvania | Sandstone | Wampum |
| 8RA44 | United States | Michigan | Sandstone | L'Anse |
| 9RA44 | United States | Iowa | Sandstone | Davenport |
| 11RB9 | United States | Kansas | Dolomite | Marion Center |
| 14RB18 | United States | Iowa | Dolomite | Dixon |
| 5RA16 | United States | Ohio | Sandstone | Leesville |
| 6RB20 | United States | Ohio | Sandstone | Amherst |
| 8LA42 | United States | New Jersey | Sandstone | Newark |
| 9LA44 | United States | Florida | Sandstone | Suwannee River |
| 11C | United States | Indiana | Limestone | Lawrence Co. |
| 5C | United States | Indiana | Limestone | Lawrence Co. |
| 6LA42 | United States | New Jersey | Sandstone | Stockton |
| 7RA19 | United States | Ohio | Sandstone | Carrollton |
| 8RA46 | United States | Washington | Sandstone | Bellingham |
| 11WE | United States | Ohio | Sandstone | Amherst |
| 14RB4 | United States | Illinois | Dolomite | Kankakee |
| 5RA18 | United States | Ohio | Sandstone | E. Cleveland |
| 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 |
| 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 |