Regarding info on family, they're included in the Davis/Black/Buckingham/Pinney Family Tree, trees.ancestry.com/tree/6348120/person/-789328650.
There are two new volunteers for San Bernardino Co. at gengathering.com. You do have to create a password but access to volunteer info IS free. One is listed under Riverside Co. and one under San Bernardino Co.
It appears that Edna died in San Bernardino Co. too according to Social Security Death Index and the above mentioned family tree. Successful Searching!