Similar Material it-1 “Bronze” Bronze Aid to Bible Understanding Brass Insight on the Scriptures, Volume 1 Brass Aid to Bible Understanding Copper Aid to Bible Understanding Copper, Brass, Bronze Insight on the Scriptures, Volume 1 ‘A Sounding Brass or a Clashing Cymbal’ The Watchtower Announcing Jehovah’s Kingdom—1988 Needle Insight on the Scriptures, Volume 2 Needle Aid to Bible Understanding Lepton Glossary Questions From Readers The Watchtower Announcing Jehovah’s Kingdom—1959