These are gained through legendary books for each class, the books drop randomly in areas lvl 39+, Trollshaws, Misty Mountains and Angmar.
They give an accomplishment to acheive in your class tab in accomplishments (shift + L) to talk to someone related to your class.

These are:

Boromir for Captain
Elrond and Gandalf for Loremasters
Bilbo Baggins for Burglars
Legolas for Hunters
Samwise for Guardians
Gimli for Champions
Lindir for Minstrels

Note 1: All these npc's are located in Rivendell.
Note 2: The trait maybe completed at level 39, but the first Legendary Trait Slot does not open until level 41.

Once you've talked to them they give you a quest to find 8 pages that are missing from the books, that is recorded in your class accomplishments.



Burglar

Book of Knives: Flashing Blades - 3rd Critical Strike response chain attack, follows Double Edged Strike (ie. BA->DES->FB)

Pages: 3, 5, 12, 17, 18, 23, 26, 31
First 4 pages from Iron-Crowns in Ram Duath, Angmar
Last 4 pages from Elite Spiders (lvl 41 -42 lurkers are the best chance) at The Wovenvales in North Trollshaws


Knee Breaker's Manual: Sweep the Knee - Your Trip skill does not break Stealth and recovers much more quickly. This increases your Trip ability. Decreases Trip reset time by 40.0 seconds

Pages: 1,3,4,8,10,15,16,19
First 4 pages from Hillmen around Donnvail in Fasach-Falroid, Angmar
Last 4 pages from Blogmal Orcs at Rammas Deluos in center of Thorhad along the dread statues, Angmar


Expert's Guide To Dirty Fighting: Exposed Throat - 4th Conjunction Starter

Pages: 4, 5, 7, 12, 15, 19, 24, 28
These pages randomly drop from level 39+ Humanoid mobs, known drops from Goblins in the camp at Western Malenhad, Angmar and Trolls in Trollshaws



Captain

Treatise of Valour: Shield of the Dunedain - Your voice calls upon the will of the dunedain protecting a companion but at the cost of half your power.

Pages; 2, 3, 5, 10, 12, 15, 18, 22
First 4 pages from Hillmen in and around Donnvail, Angmar
Last 4 pages from Blogmal Orcs near the dread staue line of Rammas Deluon, Angmar. Also from Ongbъrz orcs in the Ongbishъk camp of East Angmar.


The Book of Oaths: Oathbreakers Shame - you levy a curse on your foe which increases the damage you can do to the creature.

Pages; 6, 8, 9, 14, 17, 19, 23, 28
These pages randomly drop from level 39+ Humanoid mobs, known drops from Uruk cave in Angmar, Hillmen in and around Tуr Gailvin, Angmar and Goblins around Caldwell Pool, Misty Mountains.

The Candles Flame: Escape from Corruption - You are able to revive a fallen companion.

Pages: 4, 7, 13, 16, 25, 26, 31, 35
First 4 pages drop from Morroval in Ram Duath
Last 4 pages drop from Goblins around Caldwell Pool, Misty Mountains.



Champion

The Tome of Swords: Ferocious Strikes - An aggressive triple attack that engenders threat

Pages: 1, 4, 7, 12, 13, 17, 21, 25
First 4 pages from Wights in Trollshaws
Last 4 pages from Goblins at Caldwell Pool, Western Bruinen Sources, Misty Mountains


The Artisan Blade: Blade Explosion - A full area-of-effect attack of a huge magnitude but comes at the cost of threat.

Pages: 2, 4, 6, 9, 14, 15, 17, 26
These pages randomly drop from level 39+ Humanoid mobs, known drops from Troll hole in Bruinen Gorges,Trollshaws and Hillmen around Donnvail in Fasach-Falroid, Angmar


The Joy of Battle: Fight On - A cry of defiance that robs the monsters of their ability to use power and gives it to you.

Pages: 11, 14, 18, 24, 25, 28, 32, 36
First 4 pages from Searring Flame-Worms in Western Malenhad,
Last 4 pages from Fell Spirit, or ghost looking mob in Imlad Balchorth, Angmar



Guardian

The Shield Maidens Song: Guardians Threat - You focus yourself on enraging your enemies.

Pages: 1, 8, 11, 12, 15, 19, 25, 26
First 4 pages from Searing Flame Worms in Malenhad
Last 4 pages from Ongburz and Blogmal and Orcs in Malenhad - Ongburz Camp - North East of Gabilshathur


The Best Defence: Shield Crush - After a successful Shield Bash or Shield Taunt, you may bash him again with your shield for greater damage. This skill generates additional threat.

Pages: 2,3,5,9,12,16,17,19
First 4 pages from Level 41-42 Iron Crowns in Ram Dъath (Along the roads)
Last 4 pages from Dwarves in Gabilazan


Final Word: Challenge The Darkness - You know how to goad your enemies into attacking you, leaving your allies free to maneuver. This skill generates additional threat and forces nearby opponents to attack you as well as raising guardians ward.

Pages 6,7,13,14,19,21,24,27
These pages randomly drop from level 39+ Humanoid mobs, known drops from Hillman in Donnvail, Angmar and Dwarves in Misty Mountains



Hunter

The Way of the Hunter: Press Onwards - When the need is high, you can move on with little rest, restoring all Power and Morale in only a few seconds.
(Heals 3000 points of morale and power - 10 minutes cooldown - cannot be used in combat)

Pages: 1, 3, 4, 8, 17, 20, 21, 28
First 4 pages from Hillmen in Donnvail, Angmar
Last 4 pages from Orcs in East Angmar near Ongbishuk


A Shot In The Dark: Bard's Arrow- You fire with the skill of Bard himself driving evil enemies into fear.

Pages: 5, 10, 14, 16, 19, 22, 23, 25
First 4 pages from Wights in Trollshalls
Last 4 pages from Gabizalan Dwarves in Misty Mountains


Furthest Charge: Rain of Thorns- You rain 5 thorn arrows down upon your enemies, allowing you to pin multiple targets.

Pages: 7 9 10 14 17 18 21 24
These pages randomly drop from level 39+ Humanoid mobs, known drops from Hillmen, Donnvail, Angmar


Loremaster

Of Leaf and Twig: March of the Ents - Only the Eldar and the Istari rival your knowledge of nature, this skill enables you to bring down the wrath of the natural world on your foes.

Pages; 8, 23, 53, 77, 98, 145, 162, 241
These pages randomly drop from level 39+ Humanoid mobs, known drops from Iron crown in Fasach Falroid, Angmar, Dwarves and Goblins in Misty Mountains


The Book of Beasts: Noble Savage - Your pets have better morale, have an increased attack power and better defensive capabilities. The Loyalty and stalwart nature of your pets know no bounds.

Pages: 3, 6, 8, 14, 25, 26, 33, 37
First 4 pages from Wights, north of Thornhad in Trollshaws
Last 4 pages from Elite Spiders at The Wovenvales in North Trollshaws


Lore of the Blade: Talk to Gandalf: You may now dual weild sword and staff as well as gaining some skills in melee. This enables you to use a sword. This allows the duel weilding of weapons. Add 300.0 to Max Morale. Add 2.0% to Parry Chance. Add 2.0% to Evade Chance. Add 15.0% to Melee Offense.

Pages: 5, 11, 18, 26, 35, 45, 56, 68
First 4 pages from Orcs in Fasach-Falroid, Angmar.
Last 4 pages from Iron Crown Necromancers, Messengers and Runners in Imlad Balchorth, Angmar


Minstrel

The Rising Chord: Song of the Hopeful Heart - an area buff, giving 4 hope in a small area centered on where you cast it. Lasts up to 5mins, cooldown 10minsu

Pages: 3, 4, 11, 14, 16, 23, 27, 28.
First 4 pages from Orcs in the Uruk cave in West Angmar
Last 4 pages from Wights in Imlad Achor, East Angmar


Valour's Marches: Anthem of the Istari - This skill calls upon song to blast your enemies with an area-of-effect light that will slow the creatures who are hit by it. You will have a short window after playing a tier 3 song to play one of these and it will reset your ballad counter back to start.

Pages: 1, 5, 7, 8, 12, 16, 23, 26.
These pages randomly drop from level 39+ Humanoid mobs, known drops from the northern hillmen ruin in Misty Mountains, Urugarth on the fields of Gorothlad in East Angmar and Goblin's in Misty Mountains

Melodies of the Valar: Eldar's Grace - The ways of the Eldar are not lost to all races yet, you may bring hope to those whose morale has been entirely depleted, reviving a defeated target in combat.

Pages: 12, 14, 23, 24, 27, 29, 30, 32.
First 4 pages drop off Morroval in Ram Duath
Last 4 pages drop off Gobins in the Misty Mountains