Given name: Mordechaj Family name: Gruber
Left the bunker at Mila Street No. 18 in order to search for a passage to the "Aryan side" (in the direction of Smocza Street), came back already after the bunker had been destroyed, and with a small number of survivors went to the bunker at Franciszkanska Street No. 22.
Rufeisen-Schuepper, Helena Pozegnanie Milej 18. Wspomnienia laczniczki Zydowskiej Organizacji Bojowej (A Farewell in Mila Street No. 18. Memories of Messenger of the Jewish Fighting Organisation)