@book{26447,
	author = {Loughlin, G. F.},
	title = {Guides to ore in the Leadville district, Colorado,},
	publisher = {Govt. print. off.,},
	year = {1926.},
	series = {U.S. Geological survey.  Bulletin 779},
	address = {Washington,},
	note = {At head of title: Department of the interior.}
}