#46201: Log-Sawing Demonstration
Public Domain. National Park Service
Download Original (5316 x 3564 pixels, 4342.7 MB)
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Public Domain. National Park Service
Download Original (5316 x 3564 pixels, 4342.7 MB)