| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU23 Compartment Management Study shelterwood system sign |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Management unit sign and stand data - unthinned uniform shelterwood stand in MU23 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU23 Compartment Management Study shelterwood system thinning sign |
| Organisms: | spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Management unit sign, unspaced trees behind and trees spaced 2-by-3-meters across the road on the right, in MU23 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Study 58 thinning sign plot |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | "Row Spacing Only, Unfertilized" sign, 5.5 growing seasons after precommercial thinning in plot 21, in Study 58 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU58 thinning sign plot |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | "Row Spacing Only, Unfertilized" sign, 5.5 growing seasons after precommercial thinning in plot 23, in Study 58 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
EP1 White Pine Provenance Study planting regeneration sign |
| Organisms: | eastern white pine |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Eastern white pine provenance test, sign with information, in EP1 in the 1980s |
| Date: | 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU23 Compartment Management Study shelterwood system sign |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Sign for MU23 showing years of harvest entries, photo taken in 1980s |
| Date: | 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Study 58 thinning regeneration sign |
| Organisms: | spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | "Early Release and Fertilization Study in Spruce-Fir" sign and spruce saplings in Study 58 in the 1980s |
| Date: | 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Study 58 thinning personnel vehicle sign |
| Organisms: | spruce |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | People unloading a vehicle in a spruce stand in Study 58 in the 1980s |
| Date: | 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Cutting Practice Level Study sign |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Wooden sign (Management Intensity Demonstration Plots established 1950), in the Cutting Practice Level Study in September, 1974 |
| Date: | Sep-74 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU33 Biomass Harvesting Study strip clearcut sign map |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Board displaying the strip width - slash disposal treatment layout of an experiment, in the Biomass Harvesting Study |
| Date: | 1960s |