@book {5971,
	title = {Breaking New Ground},
	year = {1998},
	note = {Illustrations},
	publisher = {Island Press},
	organization = {Island Press},
	edition = {Commemorative ed.},
	address = {Washington, D.C.},
	keywords = {Biographies, Conservation, Natural resources},
	author = {Pinchot, Gifford}
}
@book {5970,
	title = {Breaking New Ground},
	series = {Americana library},
	volume = {AL-22 },
	year = {1972},
	note = {Introduction by James Penick, Jr.},
	publisher = {University of Washington Press},
	organization = {University of Washington Press},
	address = {Seattle, WA},
	keywords = {Biographies, Conservation, Natural resources},
	author = {Pinchot, Gifford}
}
@book {5969,
	title = {Breaking New Ground},
	year = {1947},
	note = {Illustrations},
	publisher = {Harcourt, Brace},
	organization = {Harcourt, Brace},
	edition = {1st},
	address = {New York},
	keywords = {Biographies, Conservation, Natural resources},
	author = {Pinchot, Gifford}
}
@article {5086,
	title = {Timber Trees and Forests of North Carolina},
	year = {1897},
	note = {Illustrations, Maps},
	pages = {1-227},
	institution = {North Carolina Geological and Economic Survey},
	address = {Winston, NC},
	keywords = {Forests, Trees -- Classification and description},
	issn = {Bulletin No. 6},
	author = {Pinchot, Gifford and Ashe, W W}
}
