Second cousin of Hans Rolf Stern

Hello-
Hans Rolf Stern was my mother's cousin. My mother was Lotte Spanier.
Hans Rolf Stern's father, Emil Stern, and my grandmother, Frieda (Stern) Spanier wer brother and sister. I have information and photos of Hans Rolf Stern's parents and his brother, Gunther, and when Hans Rolf was a child. Can you contact me at esermoneta@optonline.com so we can exchange information?