The Salmon of Knowledge by Eithne Massey

Long ago in Ireland, there lived a boy called Fionn, who wanted to know everything. Fionn goes to live with the wisest man in Ireland, hoping to find answers to his many questions. But Finnegas has a secret. He knows how to get all the knowledge in the world, and it starts with a silver salmon swimming in the River Boyne.
Binding: Hardback