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| Collection: | Sierra Ancha Historical Images |
| Keywords: | trough |
| Location: | Sierra Ancha Exp. Forest |
| Description: | Bog hole |
| Date: | 11/13/1934 |
| Collection: | Sierra Ancha Historical Images |
| Keywords: | trough |
| Location: | Tonto N. F.; AZ; USA |
| Description: | Concrete trough |
| Date: | 10/10/1934 |
| Collection: | Sierra Ancha Historical Images |
| Keywords: | trough |
| Location: | Base Rock plot; AZ |
| Description: | Base rock plot |
| Date: | 1934 |
