I am not related to this family but found the following information that might assist you.
His death record in Alameda County, CA is listed as follows:
Thorbjor E. Lund, d. 18 September 1977.
You can order his death cert through www.vitalrec.com, or just go to the web site and learn where to write.It's costs a bit more to have "vitalrec"order the death cert for you.However, if you are writing from another country and don't want to have to deal with the currency exchange, it might be easier if you order by credit card through the web site.The death certificate should have some information that would be of assistance to you.
Other than that, you will need to find a volunteer in that area to look up an obituary from the library records.I am over 400 miles from that location, so am unable to assist you in that way.