| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | Excellent mat of leaf litter in a 40-year-old stand of ponderosa pine |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | Excellent mat of leaf litter in a 40-year-old stand of ponderosa pine |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | An old gully sealed by needle litter |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
thinning litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | Thinned and pruned stand of ponderosa pine about 40 years old |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
thinning litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | A 40-year-old stand of ponderosa pine on the Prescott National Forest, Arizona |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
thinning litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | A 40-year-old stand of ponderosa pine on the Prescott National Forest, Arizona |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
thinning erosion period attire litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | Thinned and pruned sample plot No. 2 |
| Date: | 11/02/1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Prescott National Forest; AZ; USA |
| Description: | An old gully sealed by pine needles in a dense 40-year stand of ponderosa pine |
| Date: | 1933 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
regeneration litter sample plot |
| Organisms: | ponderosa pine |
| Location: | Fort Valley Experimental Forest; AZ; United States |
| Description: | ponderosa pine reproduction |
| Date: | 1928 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Tusayan National Forest; AZ; United States |
| Description: | logging effects |
| Date: | 10/12/1920 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | litter |
| Organisms: | ponderosa pine |
| Location: | Tusayan National Forest; AZ; United States |
| Description: | logging effects |
| Date: | 10/12/1920 |











