1. The Spark, Volume 1, Number 7, April 1931, Tenth Anniversary Jubilee for the Morgn Freiheit (Frayhayt) Der funk, 1ter yorgang, Numer 7דער פונק, 1טער יאָרגאַנג, נומער 7 Collection: International Workers’ Order (IWO) and Jewish People's Fraternal Order (JPFO) Set: Camps Conferences, Conventions, Meetings Culture Front Education IWO and JPFO Affiliated Publications and PublishingVisual Location: New York, New York, United States Date: 1931-04 Format: Image Creator: International Workers Order (IWO) Creator: אינטערנאציאנאלער ארבעטער ארדן Organization: International Workers Order
2. With Song to the Struggle: Songs for Voice and Piano Mit Gezang Tzum Kamfמיט געזאנג צום קאמף Collection: International Workers’ Order (IWO) and Jewish People's Fraternal Order (JPFO) Set: Camps Culture Front EducationVisual Location: New York, New York, United States Date: 1932 Format: Image Creator: Schaefer, Jacob, 1888-1936 Creator: שייפער, יעקב Organization: International Workers Order