Similar Material it-1 “Brass” Brass Aid to Bible Understanding Bronze Insight on the Scriptures, Volume 1 Bronze Aid to Bible Understanding Copper, Brass, Bronze Insight on the Scriptures, Volume 1 Copper Aid to Bible Understanding ‘A Sounding Brass or a Clashing Cymbal’ The Watchtower Announcing Jehovah’s Kingdom—1988 The Biggest Man-Made Hole in the World Awake!—1993 Israel’s Tabernacle Shadows The Watchtower Announcing Jehovah’s Kingdom—1959 ‘Out of the Mountains You Will Mine Copper’ The Watchtower Announcing Jehovah’s Kingdom—2013 Copper—Man’s Long-Time Servant Awake!—1973