@article {12635,
	title = {Great Smoky Mountains Official Map and Guide },
	year = {1999},
	publisher = {United States Department of Interior},
	address = {Washington, D.C.},
	keywords = {Maps},
	author = {United States National Park Service}
}
@article {13086,
	title = {Blue Ridge Parkway, Virginia and North Carolina},
	year = {1996},
	publisher = {National Park Sevice},
	address = {Washington, D.C.},
	keywords = {Blue Ridge Parkway, Maps, Roads, Tourism},
	author = {United States National Park Service}
}
