Correspondence of Unichman with Zeev Jabotinsky on these topics: Shlomo Ben Yosef, Jabotinsky's call to Betar Rosh Pina members, "Exhibition of Volunteer Service Units" in Bielitz, sending manuscript by Jabotinsky "Amnon and Tamar", Rafael Rosoff.
Also in file: Letter by Jabotinsky from London to Netzivut Betar in Eretz Israel from 25/9/1939 about destruction of Polish Jewry, worry about future of Betar, necessity to unify strength of the workers.
(copies of letters)