Given name: L Family name: Gościnna

dentist, Chlodna Street No. 4, flat 35

Warsaw Telephone Directory 1939 (SASTW - Spis Abonentow Sieci Telefonicznej m. st. Warszawy 1939): L. and Fr. Goscinni, dentist's surgery and laboratory of artificial teeth, Marszalkowska Street No. 123