Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

USFS Logo Research Data Archive
Clear lengths on two large red spruce and a yellow birch. They are more than 200 years.

imageID: 36549
Description: Clear lengths on two large red spruce and a yellow birch. They are more than 200 years.
Keywords: old-growth
Organisms: red spruce
yellow birch
hemlock
Photographer: Unknown
Original collection id: PSEF C52 - 372
Collection: Paul Smith Experimental Forest Historical Photo Archive
Quality: 4
Location: Paul Smith Experimental Forest
Date(yyyy): 1950
Citation: Use of this image is governed by Creative Commons CC BY. If you use the image, please include the following citation:

Roach, Skylar K.; Buchanan, Anna G.; Kenefic, Laura S. 2025. Paul Smith Experimental Forest historical photo archive. 2025. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2025-0034


Your help is appreciated. If you see an image that has any inaccuracy please send a note to the Archive team. Thank you!