My name is Hans Rose and my sister Eva was married to Olga and Adolph Meyer's son Felix.
Olga and Adolph escaped to the U.S. via Holland. They spent the rest of their lives in White Plains New York. Olga died in 1989 Adolph some years earlier.
If you need more information, please let me know and I will do my best to help.
My e-mail address is firstname.lastname@example.org