Relatives of Samuel Banta Dobbs 1854

Am researching my family in Missouri. My grandfather John W Dobbs (son of Samuel Banta Dobbs) and his family moved to Lake County, California in the early 1900's. Most remain in northern Calif, my branch are in southern Ca. Would appreciate any help with any generation.

My cousin Rose Sylva Jaffe has been active in this research but I have no current email address for her.

Thanks in advance,
Jean