Janina Praska: Birth certificate
     

(in Polish)

     

She was baptized in Saint Florian's Church on the right bank of the Vistula River (Praga suburb of Warsaw), because they lived on Skaryszewska Street number 2 at that time - see the original birth record of Janina Praska -  (subsequently, they moved to Stalowa street).  Later they moved to the left bank of the Vistula River and lived on Widok Street number 22.  This house survived the war.