Given name: M Family name: Berenstein

He lived at Marszalkowska Street No. 76, flat 5 p.a. He was sought after by relatives living abroad. He would want to get in touch via post or personally with the headquarters of JEAS (Association to Further Emigration), Warsaw, Grzybowski Square No. 10. It was possible to come in person between 10 a.m. and 1 a.m. (apart from Saturdays and holidays).