I didn't write this, I only discovered it here, as collected and assembled by tumblr user fenharelmaghilana, as posted: Here. They did an astonishing amount of work on this and I appreciate it wholeheartedly, if you have a tumblr, please like/reblog them.
Copied in it's entirety, with some formatting adjustments (by me) for readability. Items by
Brother Genitivi (i.e. most of the codex entries in the game) are in green,
banned works are in red, unknown authors are in blue, and
Varric's works are in purple. I attempted to alphabetize it and gave up rather quickly. I may return to it at a later date.
A list of every book ever mentioned in every codex entry ever in Dragon Age. Beware, it’s really long. Authors are listed when known, and books that have been banned by the Chantry are noted as such.
HISTORY & CULTURE
Aveline, Knight of Orlais by Lord Francois Maigny
The Adventures of the Black Fox by Gaston Gerrault
The Legend of Calenhad by Brother Herren
Tales of the Destruction of Thedas by Brother Genitivi
Stone Halls of the Dwarves by Brother Genitivi
Cautionary Tales for the Adventurous by Brother Ramos
The Studious Theologian by Brother Genitivi
The Stone and Her Children: Dwarves of the Dragon Age by Brother Genitivi
The Rise and Fall of the Dales, by Hahren Sarethia
Ferelden: Folklore and History by Sister Petrine
In Pursuit of Knowledge: The Travels of a Chantry Scholar by Brother Genitivi
Tranquility and the Role of the Fade in Human Culture by First Enchanter Josephus
Kirkwall: the City of Chains, by Brother Genitivi
Of Fires, Circles, and Templars: A History of Magic in the Chantry by Sister Petrine
Edicts of the Black Divine by Father David (banned)
Orlesian Legacy: How Institutions of the Oppressors Linger by Viscount Michel Lafaille, compiled by Philliam, a Bard!
The Exalted Marches: An Examination of Chantry Warfare by Sister Petrine
The Dowager’s Field Guide to Good Society by Lady Alcyone
Orlais: A Modern History by Revered Mother Laeticia
Tales of the Mountain-People by Sister Petrine
Black City, Black Divine: A Study of the Tevinter Imperium by Sister Petrine
A Study of the Fifth Blight by Sister Petrine
Stories of the Wild South: A Collection of Tales of the Barbarian Nations of Ferelden by Lady Susanna Ashwell
A Land of Fog by Brother Ashor Vell
The Pentaghast Kings of Nevarra, author unknown
A Study of Thedosian Astronomy by Sister Oran Petrarchius
Darktown’s Deal by Varric Tethras
The Tale of the Champion by Varric Tethras
The History of Grey Wardens in Ferelden by Brother Genitivi
The Highlands of Orlais by Lord Ademar Garde-Haut
Our Orlesian Heart by Sister Laudine
A Compiled History of the Occupied North by Renatus of Ayesleigh
Grand Visions of Life and Death by Roberto (banned)
An Examination of Orlesian Government by Sister Petrine
Exiles from the Empire by Gregorias Pepigit
The Further Journeys of Marquis d'Lussard
The Lion and the Bull: Racial Bias and Oversimplification of Qunari Societal Roles in the Orlesian Court, author unknown
The Ancient North by Sister Petrine
Tales From Beneath the Earth by Brother Genitivi
Marks Of the Blight by Sister Dorcas Guerrin
A Journey through the Dales by Lord Horace Medford
Land of the Wilders by Mother AIlis
Notable Fortresses, Castles, Towers and other Edifices of Interest in Ferelden by Henry Lannon
Lands of the Abyss by Magistrate Gilles de Sancriste
Annals of the Scarlet March by Brother Bedine
The Emperors of Orlais by Brother Harlon Ascari
Exalted: A History of the Dales by Lord Ademar Garde-Haut
The Storm Coast and its History by Brother vincent
Journeys of the Wardens: A Comprehensive History by Lady Locke
Notes On the Chant of Light by Mother Bezoria
A Panoply of Faces: AN Illustrated Official Listing of Heraldry and Masks with in the Blessed Empire of Orlais
Finding Ameridan by Professor Bram Kenric
A History Not of Heroes: Readings in the Ugly Heart of CHange, Philliam
Empire and Imperium by Sister Petrine
Qun, Gurns and Steel: Military Conflict in a Post-Blight Thedas by Sister Petrine
A New Perspective on the Exalted March, author unknown
A short primer of Orlais’s most excedllent and inspiring history by Lord Renaures
A Treaty on the Pagan and Heretical Customs of the Elven by Senallen Tavernier
The Sword of Drakon: An Examination of the Life and History of the Father of Orlais by Marquise Freyette
The Heir of Verchiel by Paul Legrand
Willeshire Downs by A Pourri
Death in the Mansion by Violette Armand
The Liberalum
The Guerrins of Ferelden: A Genealogical History, author unknown (probably Sister Dorcas)
ELVEN
Note: all of these are legends and as such the original authors are unknown. Most of the tales have been written and shared by Keeper Gisharel of Ralaferin.
The Tale of Iloren
The Fall of Arlathan
Vallaslin: Blood Writing
Andruil’s Messenger
The Ascension of Ghilan'nain
The Death of Elandrin
The Judgment of Mythal
The Story of Falon'Din and Dirthamen
The Tale of Elgar'nan and the Sun
The Tale of Fen'Harel’s Triumph
The Tale of Mythal’s Touch
A Promise Lost
FLORA & FAUNA
In Praise of the Humble Nug by Bragan Tolban
The Botanical Compendium by Ines Arancia
Musings on a Form: The Beast, compiled by Jun Emond, Esr
The Wilds of Thedas by Stephan D'Eroin
An Anatomie of Various Terrible Beasts by Baron Havard-Pierre d'Amortisan
The Gurn, Voices of Working Caravans, collected by Philliam, a Bard!
The Most Dangerous Things to Eat by Pol Ageire Phridee
Observed Behaviours In the Common Tusket by Tilda Adere
ALCHEMY, HERBOLOGY & CUISINE
Discovering Dragon’s Blood: Potions, Tinctures and Spicy Sauces by Ferdinand Pentaghast
The Alchemist’s Encyclopedia by Lord Cerastes of Marnas Pell (banned)
An Alchemical Primer of Metallurgy by Lord Cerastes (banned)
Herbology in Thedas by Master Ilian Gravire
ART & ARCHITECTURE
Art and Shame: Forbidden Wonders of Faith by Foisine de Petitforet, translated by Philliam, a Bard!
A Compendium of Orlesian Theatre by Magister Pellinar
Architectural History of Orlais by Elodie Ferrneau
An Illumination of the Art and Artifacts of the Imperial Court of Orlais by Lady Simone Therese Germaine
Artists of Ancient Tevinter, author unknown
A Still Life of Modest Artistic Discernments: Thedosian Artists Through the Ages by Plume
CHANTRY/RELIGION
Death of a Templar by Ser Andrew
Templar Tomfoolery: Saucy Little Tales from the Barracks compiled by Senior Enchanter Wentworth Higginbottom (banned)
Secrets of the Most Holy by Sister Damson
Before Andrastianism: The Forgotten Faiths by Sister Rondwyn
Orlesian Musical Tradition by Sister Rosette
The Chant of Light: Literary Analysis and History by Sister Tessaria
The Word and Challenge of the Chant by Revered Mother Hevara
Reflections on Divinity by Revered Mother Juliette
Questioning the Chant by Magister Vibus Agorian (banned)
Andraste’s Bookshelf: Essential Tomes for the Painfully Devout by Sister Lilian Hatch
The Search for the True Prophet (banned, probably)
MAGIC
A Chant for Dreamers by Magister Oratius
A Dissertation on the Fade as a Physical Manifestation by Senior Enchanter Mareno
A Life Among the Dead by Enchanter Rodomonte van Heigl
Beyond the Veil: Spirits and Demons by Enchanter Mirdromel
Fade and Spirits Mysterious by Brother Genitivi
The Four Schools: A Treatise by First Enchanter Josephus
The Interplay of Spirits in the Common Laundry Room by First Enchanter Luidweg
The Liberalum by unknown (Unavailable outside Tevinter)
The Litany of Adralla by Adralla of Vyrantium
Lyrium: The Voice of the Maker, author unknown
Mages in Orlais by Senior Enchanter Percivale
The Maker’s First Children by Enchanter Bader
Our Honoured Dead: A Guide to the Mortalitasi Order by Prelate Davidus
Patterns Within Form by First Enchanter Halden
Phylacteries: A History Written in Blood, author unknown
The Shape of the Fade by Enchanter Ephineas Aserathan
Spirits of the Spire by Senior Enchanter Francois
The True Threat of Magic by Lady Seeker Alandra Vael
Veilfire: A Beginner’s Primer with Numerous Teachings, Exercises and Applications by Magister Pendictus (banned)
We Need Not Demons: Our Dangerous World, edited by Philliam
WEAPONRY
A Meditation Upon the Use of Blades by Swordmaster Massache de Jean-mien
Legendary Blades of Thedas by Lord Roderick Gutenschwantz *Also listed under Legends/Fiction
QUNARI
The Chain of the Saarebas (banned)
The Lies of the Nobles, the Truth of the Qun, author unknown (banned)
The Straight Path, author unknown (banned)
The Tale of Imekari-saam and Imekari-raas (banned)
The Tome of Koslun, by Ashkaari Koslun (banned)
LEGENDS/TALES/FICTIONAL WORKS/MISC
The Legend of Luthias Dwarfson, author Unknown
Hard in Hightown by Varric Tethras
Swords and Shields by Varric Tethras
Small Legends: Of Nugs and Foxes collected by Philliam, a Bard!
Thedas: Myths and Legends by Brother Genitivi
Tales of Val Royeaux by Lord Werner Jauquin
Storms of Temptation, author unknown
The Randy Dowager Quarterly, various (banned but available)
The Singing Maiden, author unknown
Tales of the Wardens by Sister Manon
The Diary of Tillendall Lemallen, by Tillendall Lemallen
The Whole Nug: Culinary Treasures of Thedas by Lady Savarin Ledoure
The Witchwood, author unknown
The Tale of Corsa, author unknown
How the Deepstalker Came to Be, author unknown
Fables Under a New Sky by Maryden Halewell
Andraste & the Wyvern, author unknown
The Seer’s Yarn by Seer Agata (banned)
Legends of Ferelden by Mother AIlis
A Shadow Unfolds by Brother Ansel
Tales and Legends of the Free Marches by Lord Rodney Pierce
Legendary Blades of Thedas by Lord Roderick Gutenschwantz
Tales of the Imperium by Sister Dulcinea
Barbarian Blood: Chasind Myth Made Sensible, author unknown
Carmenum di Amatus, author unknown (banned)
The Last Griffon by Warden Warren
How to Spot a Mage and Other Advice for Young Girls by Sister Harriet
A Slave’s Life, by Shartan (supposedly) (banned, probably)
The Warrior’s Heart, author unknown
The Rose of Orlais, author unknown
The Dasher's Men by Varric Tethras
The Vipers Nest by Varric Tethras