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Stone description: porous
| Wall Number | Country Sort descending | State | Classification | Source |
|---|---|---|---|---|
| 5RQ | United States | Ohio | Sandstone | Kipton |
| 7La32 | United States | Minnesota | Sandstone | Hinckley |
| 6C | United States | Indiana | Limestone | ? |
| 7La33 | United States | Connecticut | Sandstone | Cromwell |
| 8RA21 | United States | Ohio | Sandstone | Brooklyn |
| 9RA22 | United States | Ohio | Sandstone | Newark |
| 11Lb35 | United States | Virginia | Sandstone | Saltville |
| 14LB12 | United States | Ohio | Dolomite | Tiffin |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 6RA15 | United States | Pennsylvania | Sandstone | Connellsville |
| 7WE | United States | South Dakota | Sandstone | Hot Springs |
| 9LA21 | United States | Ohio | Sandstone | Lancaster |
| S1-37 | United States | Ohio | Sandstone | Amherst |
| 10RA22 | United States | Kansas | Limestone | Smoky Hill Reservation |
| 2RQ | United States | Ohio | Sandstone | Amherst |
| 13La45 | United States | Kentucky | Limestone | Frankfort |
| 2WE | United States | Texas | Limestone | Cedar Park |
| 6EE | United States | Ohio | Sandstone | McDermott |
| 7LA39 | United States | New Jersey | Sandstone | Patterson |
| 8RA23 | United States | Massachusetts | Sandstone | E. Long Meadow |
| 9RA24 | United States | North Carolina | Sandstone | Raleigh |
| 11LB41 | United States | Washington | Sandstone | Bellingham |
| 14LB16 | United States | Iowa | Dolomite | Clemont |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 6RA16 | United States | Pennsylvania | Sandstone | Goldsboro |
| 8C | United States | Indiana | Limestone | Bloomington |
| 9LA22 | United States | Ohio | Sandstone | Logan |
| S2-1 | United States | Wyoming | Sandstone | Laramie |
| 10RA24 | United States | Kansas | Limestone | Armstrong |
| 10RA31 | United States | Kansas | Sandstone | Parsons |
| 13LA5 | United States | Wisconsin | Dolomite | La Crosse |
| 3C | United States | Texas | Limestone | Cedar Park |
| 6L48 | United States | North Carolina | Sandstone | Raleigh |
| 8RA24 | United States | North Carolina | Sandstone | Durham |
| 9RA25 | United States | North Carolina | Sandstone | Raleigh |
| 11LB45 | United States | Kentucky | Sandstone | Whitney Co. |
| 14LB28 | United States | Tennessee | Limestone | Davidson Co. |
| 6RA21 | United States | Ohio | Sandstone | Ridgeville |
| 8EE | United States | Ohio | Sandstone | Amherst |
| 9LA25 | United States | North Carolina | Sandstone | Raleigh |
| S2-10 | United States | Ohio | Sandstone | McDermott |
| 10RA32 | United States | Kansas | Sandstone | Parsons |
| 13LB10 | United States | Ohio | Dolomite | Springfield |
| 3RQ | United States | Ohio | Sandstone | Amherst |
| 6La10 | United States | Pennsylvania | Sandstone | Stoneboro |
| 7LA40 | United States | New Jersey | Sandstone | Orange Mt. |
| 8RA25 | United States | North Carolina | Sandstone | Egypt |
| 11Ra25 | United States | Kansas | Limestone | Cottonwood |
| 5Lb3 | United States | Ohio | Sandstone | Zanesville |
| 6RA3 | United States | Pennsylvania | Sandstone | Hummelstown |
| 8L48 | United States | Ohio | Sandstone | Berea |
| 9LA26 | United States | North Carolina | Sandstone | Raleigh |
| S2-126 | United States | Wyoming | Sandstone | Laramie |
| 10RB14 | United States | Indiana | Limestone | Stinesville |
| 6LA12 | United States | Pennsylvania | Sandstone | Reading |
| 7LA45 | United States | New Mexico | Sandstone | Santa Fe |
| 8RA26 | United States | North Carolina | Sandstone | Morrisville |
| 9RA3 | United States | Colorado | Limestone | Morrison |
| 11RA27 | United States | Kansas | Limestone | Cottonwood |
| 14RA12 | United States | Ohio | Dolomite | Tiffin |
| 5LB4 | United States | Ohio | Sandstone | New Philadelphia |
| 6RA30 | United States | Kentucky | Sandstone | Whitney Co. |
| 8LA20 | United States | Ohio | Sandstone | Portsmouth |
| S2-132 | United States | Idaho | Sandstone | Boise |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 13ra10 | United States | Ohio | Dolomite | Bellefountaine |
| 6La13 | United States | Pennsylvania | Sandstone | Monongahela City |
| 7Lb19 | United States | Ohio | Sandstone | Portsmouth |
| 8RA32 | United States | Texas | Sandstone | Milsap |
| 9RA33 | United States | Minnesota | Sandstone | Jordan |
| 11RA37 | United States | Tennessee | Sandstone | Sewanee |
| 14ra13 | United States | Ohio | Dolomite | Columbus Grove |
| 5LB5 | United States | Ohio | Sandstone | Newburgh |
| 6RA31 | United States | California | Sandstone | Haywards |
| 8LA21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| 9La32 | United States | Texas | Sandstone | Range |
| S2-7 | United States | Ohio | Sandstone | McDermott |
| 10RB29 | United States | New York | Sandstone | Medina |
| 13RA11 | United States | Ohio | Dolomite | Springfield |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 6LA15 | United States | Pennsylvania | Sandstone | Washington |
| 7LB29 | United States | California | Sandstone | Livermore |
| 8RA33 | United States | Colorado | Sandstone | Longmont |
| 9RA34 | United States | Missouri | Sandstone | Rockville |
| 11RA38 | United States | Tennessee | Sandstone | Ducktown |
| 14RA14 | United States | Iowa | Dolomite | Ames Station Story Co. |
| 5LB6 | United States | Ohio | Sandstone | Newark |
| 6RA4 | United States | Pennsylvania | Sandstone | Connellsville |
| 8LA24 | United States | North Carolina | Sandstone | Sanford |
| 9La34 | United States | West Virginia | Sandstone | Kingwood |
| S2-8 | United States | Idaho | Sandstone | Boise |
| 10RB31 | United States | Texas | Sandstone | Mormon Mills |
| 13RA14 | United States | Iowa | Dolomite | Dixon Sta. |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 6La16 | United States | Pennsylvania | Sandstone | Titusville |
| 7LB39 | United States | New Jersey | Sandstone | Pleasant Val. |
| 8RA36 | United States | Missouri | Sandstone | Nevada |
| 9RA36 | United States | West Virginia | Sandstone | Kingwood |
| 11RB15 | United States | Iowa | Dolomite | Lansing |
| 14RA15 | United States | Iowa | Dolomite | Winterset |