@book{29488,
	author = {Steven, Thomas August, and Ratté, James Clifford,},
	title = {Geology and ore deposits of the Summitville district, San Juan Mountains, Colorado,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1960.},
	address = {Washington,},
	note = {Part of illustrative matter fold. in pocket.}
}