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Stone description: porous
| Wall Number Sort ascending | Country | State | Classification | Source |
|---|---|---|---|---|
| 6RA15 | United States | Pennsylvania | Sandstone | Connellsville |
| 6RA14 | United States | Pennsylvania | Sandstone | Fuller |
| 6RA11 | United States | Pennsylvania | Sandstone | Layton Station Fayette Co. |
| 6R48 | United States | North Carolina | Sandstone | Raleigh |
| 6LB9 | United States | Pennsylvania | Sandstone | Baden |
| 6LB7 | United States | Pennsylvania | Sandstone | Yardleyville |
| 6LB39 | United States | Ohio | Sandstone | Youngstown |
| 6LB30 | United States | Kentucky | Sandstone | Cloveport |
| 6LB3 | United States | Pennsylvania | Sandstone | Oil City |
| 6LB21 | United States | Ohio | Sandstone | Millersburg |
| 6LB20 | United States | Ohio | Sandstone | Sunbury |
| 6LB13 | United States | Pennsylvania | Sandstone | Beaver Falls |
| 6LB12 | United States | Pennsylvania | Sandstone | Norristown |
| 6LB11 | United States | Pennsylvania | Sandstone | Sharon |
| 6La9 | United States | Pennsylvania | Sandstone | Waynesburgh |
| 6LA5 | United States | Pennsylvania | Sandstone | Scranton |
| 6LA47 | United States | Louisiana | Sandstone | Unknown |
| 6LA46 | United States | Michigan | Sandstone | Portage Entry |
| 6LA43 | United States | New Jersey | Sandstone | Pleasant Val. |
| 6LA42 | United States | New Jersey | Sandstone | Stockton |
| 6La4 | United States | Pennsylvania | Sandstone | Wampum |
| 6La30 | United States | Kentucky | Sandstone | Livingstone |
| 6LA3 | United States | Pennsylvania | Sandstone | Wampum |
| 6LA21 | United States | Ohio | Sandstone | Warwick |
| 6LA20 | United States | Ohio | Sandstone | Newark |
| 6La16 | United States | Pennsylvania | Sandstone | Titusville |
| 6LA15 | United States | Pennsylvania | Sandstone | Washington |
| 6La13 | United States | Pennsylvania | Sandstone | Monongahela City |
| 6LA12 | United States | Pennsylvania | Sandstone | Reading |
| 6La10 | United States | Pennsylvania | Sandstone | Stoneboro |
| 6L48 | United States | North Carolina | Sandstone | Raleigh |
| 6EE | United States | Ohio | Sandstone | McDermott |
| 6C | United States | Indiana | Limestone | ? |
| 5RQ | United States | Ohio | Sandstone | Kipton |
| 5RB8 | United States | Ohio | Sandstone | Independence |
| 5RB6 | United States | Ohio | Sandstone | Cumberland |
| 5RB5 | United States | Ohio | Sandstone | Brownhelm |
| 5RB4 | United States | Ohio | Sandstone | Bellaire |
| 5RB3 | United States | Ohio | Sandstone | Bedford |
| 5RB2 | United States | Ohio | Sandstone | Canal Dover Tuscarawas Co. |
| 5RB1 | United States | Ohio | Sandstone | Amherst |
| 5RA9 | United States | Ohio | Sandstone | Belleville |
| 5RA7 | United States | Ohio | Sandstone | Lewis Mills |
| 5RA6 | United States | Ohio | Sandstone | Howard Station Knox Co. |
| 5RA5 | United States | Ohio | Sandstone | Marietta |
| 5RA4 | United States | Ohio | Sandstone | Buena Vista |
| 5RA34 | United States | Connecticut | Conglomerate | Portland |
| 5RA3 | United States | Ohio | Sandstone | Bellaire |
| 5RA2 | United States | Ohio | Sandstone | Iberia |
| 5RA19 | United States | Ohio | Sandstone | Mansfield |
| 5RA18 | United States | Ohio | Sandstone | E. Cleveland |
| 5RA16 | United States | Ohio | Sandstone | Leesville |
| 5RA15 | United States | Ohio | Sandstone | Cambridge |
| 5RA13 | United States | Ohio | Sandstone | Marietta |
| 5RA12 | United States | Ohio | Sandstone | Euclid |
| 5RA11 | United States | Ohio | Sandstone | Lithopolis |
| 5RA10 | United States | Ohio | Sandstone | Berea |
| 5RA1 | United States | Ohio | Sandstone | Massillon |
| 5LB6 | United States | Ohio | Sandstone | Newark |
| 5LB5 | United States | Ohio | Sandstone | Newburgh |
| 5LB4 | United States | Ohio | Sandstone | New Philadelphia |
| 5Lb3 | United States | Ohio | Sandstone | Zanesville |
| 5LB27 | Austria | Conglomerate | Lindabrunn | |
| 5LB2 | United States | Ohio | Sandstone | Newburgh |
| 5LB1 | United States | Ohio | Sandstone | N. Hampton |
| 5LA9 | United States | Ohio | Sandstone | Piketon |
| 5La8 | United States | Ohio | Sandstone | Youngstown |
| 5LA7 | United States | Ohio | Sandstone | Millersburg |
| 5LA6 | United States | Ohio | Sandstone | Weller Twp. Richland Co. |
| 5LA5 | United States | Ohio | Sandstone | Piketon |
| 5LA4 | United States | Ohio | Sandstone | Norwalk |
| 5LA3 | United States | Ohio | Sandstone | Peninsula |
| 5LA28 | United States | Kentucky | Sandstone | Grayson Spgs |
| 5La2 | United States | Ohio | Sandstone | Norwalk |
| 5LA19 | United States | Ohio | Sandstone | Mt. Gilead |
| 5LA18 | United States | Ohio | Sandstone | Plymouth |
| 5La17 | United States | Ohio | Sandstone | Wooster |
| 5LA16 | United States | Ohio | Sandstone | Windsor |
| 5LA15 | United States | Ohio | Sandstone | Rockville |
| 5LA13 | United States | Ohio | Sandstone | New Lisbon |
| 5LA11 | United States | Ohio | Sandstone | Windham |
| 5LA10 | United States | Ohio | Sandstone | Sunbury |
| 5LA1 | United States | Ohio | Sandstone | Mt. Gilead |
| 5C | United States | Indiana | Limestone | Lawrence Co. |
| 4RQ | United States | Ohio | Sandstone | Amherst |
| 4RB12 | United States | Indiana | Limestone | Salem |
| 4R9 | United States | Ohio | Sandstone | Berea |
| 4R8 | Australia | Sandstone | New South Wales | |
| 4R7 | Australia | Sandstone | New South Wales | |
| 4LB12 | United States | Indiana | Limestone | Salem |
| 4L9 | United States | Ohio | Sandstone | Berea |
| 4L8 | Australia | Sandstone | New South Wales | |
| 4L7 | Australia | Sandstone | New South Wales | |
| 3RQ | United States | Ohio | Sandstone | Amherst |
| 3C | United States | Texas | Limestone | Cedar Park |
| 2WE | United States | Texas | Limestone | Cedar Park |
| 2RQ | United States | Ohio | Sandstone | Amherst |
| 2EE | United States | Ohio | Sandstone | Glenmont |
| 2c | United States | Alabama | Limestone | Rockwood |
| 28EE | United States | Ohio | Sandstone | McDermott |