The history of these lands before 1769 is outside the scope of this project. Some links for further research:
Amah Mutsun:
http://members.aol.com/Inammec/Costpaper.html
Monterey County Historical Society:
http://www.mchsmuseum.com/
San Benito County: Wikipedia
http://en.wikipedia.org/wiki/San_Benito_County%2C_California
Excerpt from “A History of the Mutsun Band of Costanoan Indians” (Indian Canyon) By Richard Roods http://www.native-net.org/archive/nl/9405/0085.html
Indian Canyon
http://www.indiancanyon.org
Muwekma/Ohlone
http://www.muwekma.org/
Factbites: Costanoan & Ohlone
http://www.factbites.com/topics/Costanoan
http://www.factbites.com/topics/Ohlone
Ark Independent Studies
http://www.arkis.santacruz.k12.ca.us/costanoans.html
Costanoan Rumsen Carmel Tribe of Chino, California
http://crc.nativeweb.org/history.html
http://crc.nativeweb.org/