After his death in 1941 , his son Rav Moshe succeeded him in New York , while his younger brother , Rav Levi Yitzchok moved back to Boston in 1943 and built the New England Chassidic Center .
After his death in 1941 , his son Rav Moshe succeeded him . 
 In 1943 , Rav Levi Yitzchok became another Bostoner Rebbe and built the New England Chassidic Center .