Similar Material it-2 “Willow” Willow Aid to Bible Understanding Willows—A Versatile Family of Trees Awake!—2007 Poplars Insight on the Scriptures, Volume 2 Poplars Aid to Bible Understanding A Prophetic Riddle Fulfilled The Watchtower Announcing Jehovah’s Kingdom—1977 Plants—A Valuable Source of Medicines Awake!—2003 Trees Aid to Bible Understanding A Tree “the Foliage of Which Does Not Wither” The Watchtower Announcing Jehovah’s Kingdom—2009 Trees Insight on the Scriptures, Volume 2 Will Your Days Be “Like the Days of a Tree”? The Watchtower Announcing Jehovah’s Kingdom—1973