| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
grasses regeneration |
| Organisms: | ponderosa pine |
| Location: | Kaibab National Forest; AZ; USA |
| Description: | Two-year-old seedling of ponderosa pine |
| Date: | 10/14/1920 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: |
logging cleared plots |
| Location: | Kaibab National Forest; AZ; United States |
| Description: | Private cutting on timber-rights section. Only a few small seed trees left. Brush is undisposed. S & M sale north of Wing Mountain. |
| Date: | 08/28/1920 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | soil |
| Organisms: | ponderosa pine |
| Location: | Kaibab N.F.; AZ; United States |
| Description: | Ponderosa pine seedling 2 years old in very gravellly soil |
| Date: | 1920 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | rocky soil |
| Organisms: | ponderosa pine |
| Location: | Kaibab National Forest; AZ; United States |
| Description: | Root system of ponderosa pine on rocky clay soil |
| Date: | 1920 |
| Collection: | Fort Valley Experimental Forest historical photographs |
| Keywords: | Grand Canyon |
| Organisms: | ponderosa pine |
| Location: | Kaibab NF; AZ; USA |
| Description: | ponderosa pine along Grand Canyon highway |
| Date: | 1920 |