[en] [Gutenberg 42248] • Your National Parks, with Detailed Information for Tourists Library of Alexandria
[en] [Gutenberg 50381] • Colter's Hell and Jackson's Hole / The Fur Trappers' Exploration of the Yellowstone and Grand Teton Park Region Yellowstone Library and Museum Association
[en] [Gutenberg 60131] • Estes Park, Colorado iOnlineShopping.com
[en] [Gutenberg 55414] • Grand Teton · A Guide to Grand Teton National Park, Wyoming National Park Service
[en] [Gutenberg 60929] • Our National Parks Ross & Perry
[en] [Gutenberg 27513] • The Book of the National Parks Andesite Press
[en] [Gutenberg 59914] • A History of Southern Utah and Its National Parks (Revised) Literary Licensing, LLC
[en] [Gutenberg 46305] • Yellowstone via Gallatin Gateway Montana Project Gutenberg
[en] 101 Kruger Tales · Extraordinary Stories From Ordinary Visitors to the Kruger National Park Leadwood Publishing