22 books were discovered in a special footlocker stashed inside Count Lowls‘ private study in Iris Hill:
Atop the Valley’s Soul
The Codex of Three Prescriptions
Curses of the Black Lake
Dichotomous Translations of Aklo Syntax
Elements Through the Spirals of Time
Emotions of the Past
The Falling Silk
Festival of the Snake
The Forgotten Servants
The Illusion of the Weeping Ones
In Admiration of Keeping Pacts
Manual of Silence
Men and Vultures: Denizens of the Darkened Depths and Dead Skies
Monuments of the Forest
The Shadow’s Ship
Shards of Sight
Spiders of Sin and Sky
Theological Agreements of the Kingdom
Tigers and Flies
The Unified Manual of Understanding
Voyage of the Rainbow Servant
The Wise Harmony
During the course of Chapter 90, the party took the time to skim through the books to get a sense of them: the language in which each was written, and a overview of their content.
In Chapter 100, after uncovering the list of gifts for the Mad Poet, the party was able to organize these books into groupings of three that were each relevant to researching specific gifts.
First Reference: Chapter 69
Other Notable References: Chapter 89, Chapter 90, Chapter 99, Chapter 100