68-days until the National Park Service Centennial

June 18th, 2016 brings us 68-days away from the National Park Service Centennial. In this edition of the #CentennialCountdown we go back 68-years to 1948.

1948 was the first year that Yellowstone had over 1,000,000 visitors!

In 1948 on the 180th anniversary of the signing of the Declaration of Independence we established Independence National Historic Park to protect Independence Hall in Philadelphia