@book {623,
	title = {Tree-Ring Dates from Colorado V Mesa Verde Area},
	year = {1974},
	publisher = {University of Arizona},
	organization = {University of Arizona},
	address = {Tucson},
	keywords = {colorado, date, dendrochronology, mesa verde, southwest, tree ring},
	author = {Robinson, William J. and Harrill, Bruce G.}
}
@article {782,
	title = {Crossdating at Mesa Verde National Park},
	journal = {Journal of Forestry},
	volume = {40},
	year = {1942},
	note = {Copies of this are available through the Tree Ring Laboratory; please contact the lab for more information. },
	keywords = {Archaeology, crossdating, dating, Douglass, Forestry, historic, mesa verde, southwest, tree ring},
	author = {Douglass, A.E.}
}
