San Luis Obispo County Archaeological Society - Latest information, activities, links and information on group's Chinatown and 10 Commandments projects, plus other California central coast archaeological efforts. - http://www.tcsn.net/sloarchaeology/
San Luis Obispo County Historical Society - Historical information and resources provided by the county's primary historical society, operators of the SLO County Historical Museum in San Luis Obispo. - http://www.slochs.org/