Re: Pearson, CA death index 1905-1930
another thought, California registrars kept records as early as 1875-some are more extant than others, but when you have more information on Ephraim and Benjamin's parents and there isn't a post 1904 death for them, you might want to contact the San Berd'o Co. Regestrar's office and ask if they will do a search for them. you'll need at least a first and last name and 10 year time frame. I don't know how extant their records are, and some offices refuse to do the look-up. your other resource is to sign on to the list for California death record's look ups....it's at Rootsweb's list index, I don't have it available right now.
I just do death index look-ups, but nearly every county in CA has a volunteer who will look at a death record and transcribe it for you. takes between a week and a month or so.