Aron Alkalai’s father Nissim Alkalai from the time when they constructed the water-conduit from the Rila Mountain to Sofia
Aron Alkalai’s father Nissim Alkalai and his colleagues from the Jewish bank ‘Bratstvo’ [Brotherhood]
Reception of a greeting address from the District Council on the occasion of the 60th anniversary of Aron Ishakh
Avram Merkado Natan in the group in Himmetalurgproekt, which designed the electrical arc furnace for carbide in Devnya