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Petersburg Quadrangle
[an error occurred while processing this directive]Please note: There is a very small piece of the Petersburg quad in Mason County. You may choose not to order this quad if Mason County is the area of interest.
County: Mason, Menard
Current Date: 1971
Photo Revision Date:
Archive Date: 1971
| Biggs | Easton | Mason City |
| Oakford | PETERSBURG | Greenview |
| Tallula | Salisbury | Athens |
Ordering information for Illinois State Geological Survey Publications.
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