Introduction to the National Park Service: The History of the NPS
- a free online course providing a great introduction to the National Parks system before and during it’s first 100 years
Official Website of the National Park Service
National Park Service Electronic Library
- The NPS Electronic Library is a portal to thousands of electronic publications and videos, covering the history of the National Park Service and the cultural and natural history of the national parks, monuments, and historic sites of the U.S. National Park System.
History of the National Parks 