Similar Material it-1 “Iddo” Iddo Aid to Bible Understanding Zechariah Insight on the Scriptures, Volume 2 Berechiah Insight on the Scriptures, Volume 1 Visionary Insight on the Scriptures, Volume 2 Zechariah Aid to Bible Understanding Zechariah Urges God’s Service Despite Ban The Watchtower Announcing Jehovah’s Kingdom—1950 Chronicles, the Books of Insight on the Scriptures, Volume 1 Visionary Aid to Bible Understanding Berechiah Aid to Bible Understanding Adaiah Insight on the Scriptures, Volume 1