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Stone description: porous
| Wall Number | Country | State | Classification | Source Sort ascending |
|---|---|---|---|---|
| 5Lb3 | United States | Ohio | Sandstone | Zanesville |
| 6LB39 | United States | Ohio | Sandstone | Youngstown |
| 5La8 | United States | Ohio | Sandstone | Youngstown |
| 14LA12 | United States | Ohio | Dolomite | Yellow Springs |
| 8LB38 | United States | Arizona | Sandstone | Yavapai Co. |
| 6LB7 | United States | Pennsylvania | Sandstone | Yardleyville |
| 9RA42 | United States | Illinois | Sandstone | Xenia |
| 5La17 | United States | Ohio | Sandstone | Wooster |
| 14RA15 | United States | Iowa | Dolomite | Winterset |
| 5LA16 | United States | Ohio | Sandstone | Windsor |
| 5LA11 | United States | Ohio | Sandstone | Windham |
| 9LB41 | United States | Indiana | Sandstone | Williamsport |
| 11LB45 | United States | Kentucky | Sandstone | Whitney Co. |
| 6RA30 | United States | Kentucky | Sandstone | Whitney Co. |
| 10RA13 | United States | Ohio | Dolomite | White House |
| 10RA15 | United States | Ohio | Dolomite | White House |
| 8LB39 | United States | West Virginia | Sandstone | Wheeling |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 6La9 | United States | Pennsylvania | Sandstone | Waynesburgh |
| 6LA15 | United States | Pennsylvania | Sandstone | Washington |
| 6LA21 | United States | Ohio | Sandstone | Warwick |
| 8LA37 | United States | Missouri | Sandstone | Warrensburg |
| 10RB22 | United States | Ohio | Sandstone | Warren |
| 6LA3 | United States | Pennsylvania | Sandstone | Wampum |
| 6La4 | United States | Pennsylvania | Sandstone | Wampum |
| 8LA26 | United States | North Carolina | Sandstone | Wadesboro |
| 13RA18 | United States | Iowa | Limestone | Vinton |
| 10RA14 | United States | Ohio | Dolomite | Van Wert |
| 8LB47 | United States | New Mexico | Sandstone | Valencia Co. |
| 6LA47 | United States | Louisiana | Sandstone | Unknown |
| 9RA20 | United States | Pennsylvania | Sandstone | Uniontown |
| 9LB21 | United States | Ohio | Sandstone | Twinsburg |
| 12RB40 | United States | Alabama | Limestone | Turks Cave |
| 9RA9 | United States | Iowa | Limestone | Tracey Station, Marion Co. |
| 6La16 | United States | Pennsylvania | Sandstone | Titusville |
| 14RA12 | United States | Ohio | Dolomite | Tiffin |
| 14LB12 | United States | Ohio | Dolomite | Tiffin |
| 8LB36 | Scotland | Sandstone | Thurso | |
| 9LB43 | United States | Washington | Sandstone | Tenino |
| 8RB46 | United States | Washington | Sandstone | Tenino |
| 9LA44 | United States | Florida | Sandstone | Suwannee River |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 6RB39 | United States | Ohio | Sandstone | Sunbury |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 10Lb19 | United States | Pennsylvania | Sandstone | Stoop's Ferry |
| 7LB44 | United States | Michigan | Sandstone | Stony Point |
| 6La10 | United States | Pennsylvania | Sandstone | Stoneboro |
| 13RA16 | United States | Iowa | Dolomite | Stone City |
| 14LA16 | United States | Iowa | Dolomite | Stone City |
| 6LA42 | United States | New Jersey | Sandstone | Stockton |
| 10RB14 | United States | Indiana | Limestone | Stinesville |
| 8LA21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| 8LB21 | United States | Ohio | Sandstone | Steubensville Jefferson Co. |
| 13RA31 | Austria | Marble | Sterzing | |
| 10RB36 | United States | Missouri | Sandstone | St. Genevieve |
| 13LB10 | United States | Ohio | Dolomite | Springfield |
| 13RA11 | United States | Ohio | Dolomite | Springfield |
| 12LA35 | United States | Indiana | Limestone | Spencer |
| 10RA22 | United States | Kansas | Limestone | Smoky Hill Reservation |
| 7RB28 | United States | California | Sandstone | Sites |
| 6LB11 | United States | Pennsylvania | Sandstone | Sharon |
| 11RA37 | United States | Tennessee | Sandstone | Sewanee |
| 11La40 | United States | Tennessee | Sandstone | Sewanee |
| 6LA5 | United States | Pennsylvania | Sandstone | Scranton |
| 7LA45 | United States | New Mexico | Sandstone | Santa Fe |
| 8LA24 | United States | North Carolina | Sandstone | Sanford |
| 13RB10 | United States | Ohio | Dolomite | Sandusky |
| 11Lb35 | United States | Virginia | Sandstone | Saltville |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 12RA32 | United States | Indiana | Limestone | Salem |
| 10LA50 | Canada | Sandstone | Sackville, New Brunswick | |
| 6RB16 | United States | Pennsylvania | Diabase | Round Top Gettysburg |
| 13RA47 | United States | Alabama | Limestone | Rockwood |
| 16C | United States | Alabama | Limestone | Rockwood |
| 2c | United States | Alabama | Limestone | Rockwood |
| 9RA34 | United States | Missouri | Sandstone | Rockville |
| 5LA15 | United States | Ohio | Sandstone | Rockville |
| 8LB37 | United States | Missouri | Sandstone | Rockville |
| 8Lb32 | United States | Texas | Sandstone | Riverside |
| 11LB11 | United States | Ohio | Dolomite | Riley Twp. Putnam Co. |
| 6RA21 | United States | Ohio | Sandstone | Ridgeville |
| 11Lb32 | United States | Utah | Sandstone | Red Butte |
| 6LA12 | United States | Pennsylvania | Sandstone | Reading |
| 9RA39 | United States | Wyoming | Sandstone | Rawlins |
| 9La32 | United States | Texas | Sandstone | Range |
| 9RA24 | United States | North Carolina | Sandstone | Raleigh |
| 9LA25 | United States | North Carolina | Sandstone | Raleigh |
| 9RA25 | United States | North Carolina | Sandstone | Raleigh |
| 6L48 | United States | North Carolina | Sandstone | Raleigh |
| 9LA26 | United States | North Carolina | Sandstone | Raleigh |
| 6R48 | United States | North Carolina | Sandstone | Raleigh |
| 11LA2 | United States | Michigan | Dolomite | Raisinville |
| 14RB17 | United States | Iowa | Dolomite | Quarry, Marshall Co. |
| 12LA11 | United States | Ohio | Dolomite | Pt. Marblehead |
| 8LA20 | United States | Ohio | Sandstone | Portsmouth |
| 7Lb19 | United States | Ohio | Sandstone | Portsmouth |
| 5RA34 | United States | Connecticut | Conglomerate | Portland |
| 8RB35 | United States | Connecticut | Sandstone | Portland |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |