The complete listing for the previously provided URL is at:
http://www.usgwarchives.net/ca/sierra/cemeteries.html

There are a couple of other Sierra County cemetery listings at:
http://www.cagenweb.com/archives/Cemetery/Sierra/SierraCemet...

See also:
http://www.usgwtombstones.org/california/sierra.html

Note that the above lists are not guaranteed to be complete -- fires, floods, etc.

All of these are referenced by the GenWeb site for Sierra County:
http://cagenweb.com/sierra/Record_collections/Source_records...

More Sierra County listings will be added as I discover them.

Good luck in your research,
Rick Hanson
Sierra County CAGenWeb