On May 21st, 2016 we find ourselves 96-days away from the 100th anniversary of the National Park Service on August 25th, 2016. Here is some National Park Service history from 96-years ago in 1920.
The National Park Service keeps very good records about park visitation. 1920 is a very special year, because it is the first year that the park service see one million visitors in a single year.
If you want to read more statistics about National Parks visitation you can go to the link below:
National Parks Visitation Statistics