| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | U.S. Forest Service building on the Penobscot Experimental Forest after renovations were complete |
| Date: | 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
infrastructure personnel |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | A forester outside the old U.S. Forest Service building at the Penobscot Experimental Forest Administrative site, 1970s or 1980s |
| Date: | 1970s or 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
road vehicle infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Gate across the road near Blackman Stream, vehicle, 1970s or 1980s |
| Date: | 1970s or 1980s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
personnel infrastructure road |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Observer making fire weather reading, on September 29 1956 |
| Date: | 9/29/1956 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
personnel infrastructure road |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Open type fire weather station on September 29 1952 |
| Date: | 9/29/1952 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Combination field office, shop, garage, on September 28 1952 |
| Date: | 9/28/1952 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
personnel road infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Men building bridge at the Penobscot Experimental Forest, picture 4, in June 1950 |
| Date: | Jun-50 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
personnel road infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Men building bridge at the Penobscot Experimental Forest, picture 5, in June 1950 |
| Date: | Jun-50 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
infrastructure vehicle |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | U.S. Forest Service building on the Penobscot Experimental Forest, 1950s |
| Date: | 1950s |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU90 Cutting Practice Level Study sign infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | A display of a cord of wood in MU90 |
| Date: |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
personnel infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Personnel conducting assessment at a fire weather station |
| Date: |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: | infrastructure |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | U.S. Forest Service building on the Penobscot Experimental Forest |
| Date: |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
infrastructure sign |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Entrance sign at the Penobscot Experimental Forest and flag pole |
| Date: |












