National Register of Historical Places - The National Park Services list of official historical buildings, districts and archeological sites in San Bernardino County. - http://www.nationalregisterofhistoricplaces.com/CA/San+Bernardino/state.html
Counting California: San Bernardino County - California Digital Library's Demographic information on the county. - http://countingcalifornia.cdlib.org/counties/sanbernardin.html
CERES - San Bernardino County - An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, maps. - http://ceres.ca.gov/geo_area/counties/San_Bernardino/
County of San Bernardino - Official site. Provides directory of departments, information for visitors, trivia quiz, job openings, and online property tax payments. - http://www.co.san-bernardino.ca.us/