National Parks USA Apr 10, 2013 Rocky Mountain National Park; Wikimedia Commons Following the establishment of Yellowstone National Park in 1872, the U.S. Congress authorized the use of many federal lands for additional parks and monuments. Share:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)MoreClick to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window) You might also like these posts: 2 Comments Holly on April 10, 2013 at 7:50 am What year did this happen? In the 40’s? Reply cheval73 on April 10, 2013 at 8:52 am Yellowstone National Park was established by an Act signed by President Ulysses S. Grant on March 1, 1872, as the Nation’s first national park.The National Park Service was created by an Act of Congress and signed by President Woodrow Wilson on August 25, 1916. There are almost 400 units in the National Park Service today. http://www.nationalparkservice.org Reply Comments, contributions, corrections, and suggestions are always welcome: Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.