The national parks.
Supt. of Docs. no.: 129.2:P23/3
1. United States. National Park ServiceHistory. 2. National parks
and reservesUnited StatesHistory. I. United States. National
Park Service. Division of Publications. II. Title.
SB482.A4M24 1984 353.008'632'09 84-600068
1st Edition: 1985
2nd Edition: 1991
3rd Edition: 2000 updated in 2004