1.
 |  | Title: Apostle Islands: A Guide to Apostle Islands National Lakeshore, Wisconsin by National Park Service Staff ISBN: 0160035457 Publisher: Government Printing Office Pub. Date: 1988 List Price: $7.00 Amazon.com Price: $7.00 |
2.
 |  | Title: At Home in the Smokies: A History Handbook for Great Smoky Mountains National Park (024-005-00902-7) by National Park Service Staff ISBN: 0160034868 Publisher: US Government Printing Office Pub. Date: 1984 List Price: $9.00 Amazon.com Price: $9.00 |
3.
 |  | Title: National Register of Historic Places, 1966 to 1994: A Cummulative List Through January 1, 1994 by National Park Service Staff ISBN: 0891332545 Publisher: Preservation Press Pub. Date: 01 September, 1994 List Price: $98.00 Amazon.com Price: $98.00 |
4.
 |  | Title: Chesapeake & Ohio Canal (Official National Park Handbook Ser. 142) by National Park Service Staff, Richard Schlecht, Pat Topper, Donald Demers, Steven Patricia, Ken Townsend ISBN: 0912627433 Publisher: Natl Park Service Pub. Date: 01 July, 1991 List Price: $12.00 Amazon.com Price: $12.00 |