Who knows Eva Gross?

I am serching for my mother´s playmate Eva Gross born 26 August 1926 in Berlin who lived in the Berlin district Tiergarten and immigrated to Bolivia on 13 June 1939. Her parents were Dr. Peter Gross and Gretel (Margarete) geb. David. As of 1978 Mr. and Mrs. Gross were living at Argentina.

George Fogelson
Chiffre 111316