| Country | State | Classification | Source | WallNo | Centennial | Commercial | Location | surroundPic |
| United States | Pennsylvania | Sandstone | Monongahela City | 6La13 | 25239/2 | y | Front Face (South) | Dscf0121.jpg |
Description |
| buff |
| coarse grain |
| porous |
| carboniferous |
| ||||||||||||||||||||
No 6LA13 is:
| Picture of the Archive Stone: |
Actual Picture from the Stone Wall:
| ||||||||||||||||||