@book{142593,
	author = {Butcher, Devereux. and National Parks Association (U.S.)},
	title = {Exploring our national parks and monuments /},
	publisher = {Houghton Mifflin,},
	year = {1949.},
	address = {Boston :},
	edition = {2d ed.},
	note = {"Prepared under the auspices of the National Parks Association."}
}