Biography written by Israel Silberberg, born in Piotrkow Trybunalski, Poland about his childhood in Poland, his immigration to Eretz Israel, participation in struggle to establish Israel as Etzel member, his activity in Etzel Jerusalem branch, his family and professional life.
Photocopies of
documents in archives of Haganah history about tracing Silberberg's "Gra" Etzel activities.
Photocopy of page from book by Yehuda Lapidot, about secret room built by Israel Silberberg in his parents' home during "Season" period (from Lapidot's book "The Season - Hunting Brothers').