Kaib, Mark J. 1998. ?Fire History In Riparian Canyon Pine-Oak Forests And The Intervening Desert Grasslands Of The Southwest Borderlands: A Dendroecological, Historical, And Cultural Inquiry?. School Of Renewable Natural Resources. School Of Renewable Natural Resources. Tucson: University of Arizona.

Muranaka, Therese. 1992. ?The Russian Molokan Colony At Guadalupe, Baja California: Continuity And Change In A Sectarian Community?. Anthropology. Anthropology. University of Arizona. http://ezproxy.library.arizona.edu/login?url=http://proquest.umi.com/pqdweb?did=746278161&sid=4&Fmt=2&clientId=43922&RQT=309&VName=PQD.

Douglass, AE. 1923. ?University Of Arizona Eclipse Expedition, Port Libertad, Sonora, Mexico?. Publications Of The Astronomical Society Of The Pacific XXXVI (No. 212). Publications Of The Astronomical Society Of The Pacific.

Douglass, AE. 1897. ?The Lowell Observatory In Mexico?. Popular Astronomy. Popular Astronomy.