Hi. I am another Bateman descendant. Ted and I and others have been communicating for a while. I grew up in MC. My great grandmother was Ara Bateman Zenor - born on Bateman Island 1869. She married Oscar Zenor and they lived in Patterson. Her daughter, Cedes Thompson, was my grandmother.
I would so much enjoy any stories or information you have time to tell regarding Bateman Island. And if the boxes you found in the archives are relative to the island and the family, I may just have to make a trip to LA. I'm missing it anyway!