 After the death of Szold in February 1945, Beyth took over the official leadership of Youth Aliyah.On December 26, 1947, he accompanied a convoy from Tel Aviv to Jerusalem, which contained a bus with children being brought to Jerusalem in the context of Youth Aliyah activities.Beyth who initially intended to follow the convoy in a passenger car together with Golda Myerson (later Meir) from the Jewish Agency, instead took a place with the children in the bus, to allow a representative of Youth Aliyah from the USA to travel in the car.