Title: Le-Naḥum Soḳolov oreaḥ Yehude Polanyah : ḳovets maʾamarim reshimot ṿe-zikhronot.
Authors: Hefṭman, Yosef, 1888-1955.
Publisher: ha-Ṿaʻad ha-merkazi shel Histadrut ha-Tsiyonim be-Polanyah,
Year: 1923