The Book of Beasts
The first four pages of this book can be found on enemies scattered across Angmar, Eregion, and Moria. The last four pages can be found on enemies scattered across Forochel, Moria, and the Misty Mountains.
It is unclear who wrote this book as no author's name is given, but the clarity and wisdom with which it is written only adds further to the mystery of its apparently modest writer. The Book of Beasts speak at great length of the bonds which may be formed between creatures of the wilds and those among the Free Peoples of Middle-earth who are willing to understand their own true natures. It further claims that the Wise might even learn the tongues of the wild creatures of the world and may coax them to greater feats of bravery and strength than would otherwise be possible for a beast lacking in its own will to strive and accomplish.
Whomever transcribed this particular copy, alas, does not appear to have been entirely in his right mind. Most of the text is clear, but some few of the pages are written in a hopeless scrawl with no meaning in any language of Elves or Men that you can discern. Indeed, it seems as if the scribe must have been taken with fits of madness during these passages. Perhaps Elrond of Rivendell might be able to tell you more about the mysterious author and help you untangle the riddle of the meaningless passages.