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| Collection: | RMRS Archive Images |
| Keywords: |
canker forest pathology |
| Organisms: | aspen |
| Location: | Great Sand Dune National Monument; CO; United States |
| Description: | Canker or burl of unknown cause on Populus tremuloides |
| Date: | 08/1943 |
| Collection: | RMRS Archive Images |
| Keywords: |
animal damage forest pathology |
| Organisms: | aspen |
| Location: | Rocky Mountain National Park; CO; United States |
| Description: | Damage to aspen from elk browsing |
| Date: | 1943 |
