Link's Awakening Trading Sequence Guide - The Legend of Zelda: Link's Awakening Wiki Guide - IGN
Link's Awakening: How to Get the Magnifying Glass and Boomerang - YouTube
How to trade for the Magnifying Lens - Link's Awakening | Shacknews
Magnifying Lens - Zelda Wiki
Zelda: Link's Awakening trading sequence quest: Where to trade the Yoshi Doll, Ribbon, Dog Food, Bananas and other items for the Magnifying Lens | Eurogamer.net
Link's Awakening trade up to get the Magnifying Glass and Boomerang walkthrough - Polygon
Zelda Link's Awakening: Face Key Location, Ancient Ruins and Boomerang | Nintendo Life