The Forest Reserve Act authorized the president to set aside “forest reserves” from public domain lands to be managed by the Department of the Interior. “Forest reserves” later became National Forests.
The National Park Service Organic Act of 1916 established the National Park Service as part of the Department of the Interior. The new agency was charged with promoting and regulating the use of national parks, monuments, and reservations and preserving them “for the enjoyment of future generations.”