From the California Death Index:
Name: James Campbell
Social Security #: 053244359
Birth Date: 28 Feb 1914
Birth Place: Other Country
Death Date: 10 Feb 1978
Death Place: Los Angeles
So either his first name was incorrect originally on the death certificate OR was mis-transcribed by the Department of Health OR was mis-copied by Ancestry.com...
His death WAS reported in California then.
This page tells how you can order his death certificate.http://www.cdph.ca.gov/certlic/birthdeathmar/Pages/Certified...
The death certificate will indicate where he is buried. The cemetery probably has his obituary on file.