The Great Book of Grudges
The Book of Grudges is a sacred and massive tome made of stone, metal, and parchment.
It is meticulously kept by the dwarves in their revered halls of Ironforge.
Within its pages, every wrong, insult, or betrayal committed against the dwarves is recorded, serving as a solemn reminder of past grievances.
It is essentially a record of all the terrible wrongs and treacherous deeds ever perpetrated against them, amounting to a very detailed recorded history of the Dwarves.
The dwarves view the book as a symbol of their honor and loyalty, motivating them to seek retribution and uphold justice against their enemies until the grudges are resolved.
Being a symbol of the absolute lordship of the Dwarf High Kings, the Great Book of Grudges is kept secret from the eyes of other races.
In fact, few members of the outside world have even seen the tome, save for a small number of scribes.