@article {4288,
	title = {Ferns of Great Smoky Mountains National Park},
	year = {1969},
	note = {Illustrations},
	keywords = {Ferns, Flora -- Classification and description},
	author = {Stevenson, George B}
}
@book {5915,
	title = {Trees of the Great Smoky Mountains National Park},
	year = {1967},
	note = {Illustrations},
	publisher = {The Great Smoky Mountains Natural History Association},
	organization = {The Great Smoky Mountains Natural History Association},
	address = {Cosby, TN},
	keywords = {Trees -- Classification and description},
	author = {Stevenson, George B}
}
