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Stone description: porous
| Wall Number | Country | State | Classification Sort ascending | Source |
|---|---|---|---|---|
| 5RA7 | United States | Ohio | Sandstone | Lewis Mills |
| 6LA15 | United States | Pennsylvania | Sandstone | Washington |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 6RA4 | United States | Pennsylvania | Sandstone | Connellsville |
| 6RB8 | United States | Pennsylvania | Sandstone | Black Walnut |
| 7LB29 | United States | California | Sandstone | Livermore |
| 8LA24 | United States | North Carolina | Sandstone | Sanford |
| 8LB34 | United States | Minnesota | Sandstone | Mendota |
| 8RA33 | United States | Colorado | Sandstone | Longmont |
| 8RB36 | Scotland | Sandstone | Nairn | |
| 9La34 | United States | West Virginia | Sandstone | Kingwood |
| 9Lb37 | United States | Oregon | Sandstone | Forest Grove |
| 9RA34 | United States | Missouri | Sandstone | Rockville |
| 9RB35 | United States | West Virginia | Sandstone | Charleston |
| S2-8 | United States | Idaho | Sandstone | Boise |
| 10Lb19 | United States | Pennsylvania | Sandstone | Stoop's Ferry |
| 10RB31 | United States | Texas | Sandstone | Mormon Mills |
| 13WE | United States | Ohio | Sandstone | McDermott |
| 5La2 | United States | Ohio | Sandstone | Norwalk |
| 5RA1 | United States | Ohio | Sandstone | Massillon |
| 5RA9 | United States | Ohio | Sandstone | Belleville |
| 6La16 | United States | Pennsylvania | Sandstone | Titusville |
| 6LB21 | United States | Ohio | Sandstone | Millersburg |
| 6RA6 | United States | Pennsylvania | Sandstone | Farrandsville |
| 6RQ | United States | Ohio | Sandstone | McDermont |
| 7LB39 | United States | New Jersey | Sandstone | Pleasant Val. |
| 7RB19 | United States | Ohio | Sandstone | Amherst |
| 8LA26 | United States | North Carolina | Sandstone | Wadesboro |
| 8LB35 | United States | Connecticut | Sandstone | Manchester |
| 8RA36 | United States | Missouri | Sandstone | Nevada |
| 8RB39 | United States | New Jersey | Sandstone | Little Falls |
| 9LB40 | United States | Indiana | Sandstone | French Lick Twp. |
| 9RA36 | United States | West Virginia | Sandstone | Kingwood |
| 9RB36 | United States | New Jersey | Sandstone | Belleville |
| S3-11 | United States | Ohio | Sandstone | McDermott |
| 10LB20 | United States | Ohio | Sandstone | Lancaster |
| 10RB32 | United States | Colorado | Sandstone | Fort Collins |
| 11RB26 | United States | South Dakota | Sandstone | Hot Springs |
| 22EE | United States | Ohio | Sandstone | McDermott |
| 4R7 | Australia | Sandstone | New South Wales | |
| 5LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 5RA10 | United States | Ohio | Sandstone | Berea |
| 5RB1 | United States | Ohio | Sandstone | Amherst |
| 6LA20 | United States | Ohio | Sandstone | Newark |
| 6LB3 | United States | Pennsylvania | Sandstone | Oil City |
| 6RA8 | United States | Pennsylvania | Sandstone | Homewood |
| 6WE | United States | Ohio | Sandstone | Amherst |
| 7LB40 | United States | New Jersey | Sandstone | Newark |
| 7RB20 | United States | Ohio | Sandstone | Independence |
| 8LA31 | United States | Kentucky | Sandstone | Johnson Co. |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 8RA37 | United States | Missouri | Sandstone | Howard Co. |
| 8RB40 | United States | New Jersey | Sandstone | Belleville |
| 9LA38 | United States | Indiana | Sandstone | Cannelton |
| 9LB41 | United States | Indiana | Sandstone | Williamsport |
| 9RA39 | United States | Wyoming | Sandstone | Rawlins |
| 9RB38 | United States | Oregon | Sandstone | Near Albany |
| S3-6 | United States | Ohio | Sandstone | McDermott |
| 10Lb37 | United States | West Virginia | Sandstone | Grafton |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 11RB29 | United States | Virginia | Sandstone | Manassas |
| 23EE | United States | Idaho | Sandstone | Boise |
| 4R8 | Australia | Sandstone | New South Wales | |
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 5RA11 | United States | Ohio | Sandstone | Lithopolis |
| 5RB2 | United States | Ohio | Sandstone | Canal Dover Tuscarawas Co. |
| 6LA21 | United States | Ohio | Sandstone | Warwick |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 6RA9 | United States | Pennsylvania | Sandstone | Garland |
| 7LB43 | United States | Michigan | Sandstone | L'Anse |
| 7RB25 | United States | New York | Sandstone | Margarettville |
| 8LA35 | United States | Connecticut | Sandstone | E. Haven |
| 8LB37 | United States | Missouri | Sandstone | Rockville |
| 8RB42 | United States | Montana | Sandstone | Columbus |
| 9LA39 | United States | Indiana | Sandstone | French Lick Twp. |
| 9LB43 | United States | Washington | Sandstone | Tenino |
| 9RA41 | United States | Illinois | Sandstone | Carbondale |
| 9RB39 | United States | Indiana | Sandstone | Paoli |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 14RA48 | United States | Texas | Limestone | Cedar Park |
| 12RA36 | United States | Kentucky | Limestone | Garrett |
| 13RA23 | United States | Kansas | Limestone | Augusta |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 7LA10 | United States | Florida | Limestone | Key West |
| 9RA12 | United States | Iowa | Limestone | Iowa City |
| 12RB40 | United States | Alabama | Limestone | Turks Cave |
| 13RA24 | United States | Kansas | Limestone | Douglass |
| 14LA37 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 7LB9 | Hungary | Limestone | Margarethen Leitha Mts. | |
| 11C | United States | Indiana | Limestone | Lawrence Co. |
| 14LA38 | Hungary | Limestone | Oszlopp | |
| 5C | United States | Indiana | Limestone | Lawrence Co. |
| 13RA35 | Spain | Limestone | Murcia, Murcia | |
| 14La48 | United States | Texas | Limestone | Cedar Park |
| 2c | United States | Alabama | Limestone | Rockwood |
| 8RA16 | United States | Indiana | Limestone | Ellettsville |
| 8RB15 | United States | Utah | Limestone | Ephriam |
| 9LA5 | United States | Missouri | Limestone | Barrett's Station |
| 10C | United States | Indiana | Limestone | Bloomington |
| 13RA36 | Hungary | Limestone | Breitenbrunn |