- Department of Transportation. Federal Highway Administration. Office of Planning, Environment, and Realty. Office of Natural and Human Environment. National Scenic Byways Program. 1991-9999
- National Archives at College Park - Still Pictures
The original finding aid described this photograph as: Original Caption: If you follow the upper trail of the Trail Through Time, you can see the entire Rabbit Valley. Location: Rabbit Valley, Along Dinosaur Diamond Prehistoric Highway., Colorado Status: Public domain.