National Geographic guide to national parks of the United States by [Thomas B. Allen ... [et al.], writers]

Complete national parks of the United States: featuring 400+ parks, monuments, battlefields, historic sites, scenic trails, recreation areas, and seashores by Mel White

Guide to state parks of the United States by [prepared by the Book Division, National Geographic Society]

America's parks by photographs by Philippe Bourseiller ; essays by Jean-Franðcois Chaix, Gary Ferguson, and Roger Cans

Hiking Michigan by Roger E. Storm, Susan M. Wedzel