@book{51747,
	author = {Smithsonian Institution. and Powell, John Wesley,},
	title = {Report of the explorations in 1873 of the Colorado of the West and its tributaries,},
	publisher = {Govt. print. off.,},
	year = {1874.},
	address = {Washington,},
	note = {Third preliminary report, dated May 1, 1874.}
}