Here are 5 articles on Greeks in California from the PERSI Index. See previous posting "Texas - Greek Immigrant Articles" for more details on PERSI and how to order copies of the following articles.
"Greek Orthodox Church Annunciation, 1957" published by Stanislaus Stepping Stones, Modesto, CA, Mar 2004, Vol. 28, Issue 2
"Greek Community in County, 1900s" published by Stanislaus Stepping Stones, Modesto, CA, Jan 2004, Vol. 28, Issue 1
"St. Prophet Elias Greek Orthodox Church, 1915-1865" published by Valley Journal, San Bernardino, CA, Winter 2003, Vol 40
"Greek Orthodox Memorial Park Notes" published in SMCGS Newsletter, San Mateo, CA, Jun 2000, Vol 18, Issue 6
"San Francisco's Greek Colony" published in California History, San Francisco, CA, Summer 1981, Vol 60, Issue 2
Good luck with your Greek family history research.
Georgia Keilman nee Stryker (Stratigakos)