• Photo of park visitors enjoying sunset from the Alpine Ridge Trail in Rocky Mountain National Park.

    Rocky Mountain

    National Park Colorado

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Administrative History 1915-1965

The following links are to PDF files which can be downloaded and printed. Each will open in a new window.

To view the documents in a web-based format, go to nps.gov/history/history/online_books/romo/adhit.

Table of Contents



Foreword and Acknowledgements


Chapter 1 — The Pioneers of the Estes Park and Grand Lake Regions

Chapter 2 — Enos Mills and the Creation of the Park

Chapter 3 — The Early Years and the Transportation Controversy

Chapter 4 — Colorado vs. Toll

Chapter 5 — The Cede-Jurisdiction Controversy

Chapter 6 — Roads and Trails of the Park

Chapter 7 — The Depression and the CCC

Chapter 8 — The Colorado-Big Thompson Project

Chapter 9 — Wildlife Management

Chapter 10 — The Naturalists

Chapter 11 — Winter Sports and Hidden Valley

Chapter 12 — Inholdings, Concessions and Boundary Extensions

Chapter 13 — The Park Rangers


Appendix — Superintendents of Rocky Mountain Park


Map — Rocky Mountain National Park

Did You Know?

a photo of gneiss (a metamorphic rock)

The oldest rocks in the park are metamorphic (biotite schist and gneiss) estimated at 1.7 billion years old, making them some of the oldest rocks within the National Park System.