| Country | State | Classification | Source | WallNo | Centennial | Commercial | Location | surroundPic |
| United States | Iowa | Limestone | Iowa City | 12LA20 | 25408 | y | Front Face (South) | DSCF0410.jpg |
Description |
| dark |
| uneven-gr |
| compact |
| siliceous |
| Devonian |
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No 12LA20 is:
| Picture of the Archive Stone: |
Actual Picture from the Stone Wall:
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