Lost-Lore
Lost-Lore

From Lotro-Wiki :
Introduced with Update 21, the Mordor Expansion, Lost Lore books are new audio log journals that can be found to provide context to and depictions of historical events.
Every time you collect pages of a tome, a short audio journal will play.
When all the pages of a region are collected, you will receive a completed text and a housing item that plays the entire audio.