Book of Mudora
From Zelda Wiki.org
The Book of Mudora is a collection of ancient Hylian lore and stories, as well as a guide to translating ancient Hylian Language that appears throughout the land of Hyrule. The Book of Mudora appears in A Link to the Past and is used to get into the second temple in the light world. It is found in a Library south of Kakariko Village.

