Testimonies about womens activity in Betar Poland, by Matia Ben David and Sarah Lieberman;
Testimony by Yitzhak Millwenger (Yiddish);
Various handwritten testimonies;
Recollections of Elyakim Federman from Ken Betar Sosnowiec; among other topics, recollection about first visit by Jabotinsky in the city;
Survey by Aharon Shavit about history of Ken Betar Antonovka.