Memories

The Memories are the archives of Orzammar. The entire dwarven history from the creation of Orzammar forward is recorded in them.
Memories are recorded on the Wall of Memories by the Shaper of Memories who crafts lyrium runes containing the actual thoughts of the ones who made them.
Memories contain detailed genealogical records of every dwarf of Orzammar as well as deaths, marriages, inheritances, and votes of the dwarven Assembly, among other things. The Memories are a collection of dry facts, such as "who", "what", "when", "where", and "how", but not "why". For the dwarves, genealogical records are of supreme importance, for reasons of caste and storytelling, and there is a special portion of the Shaperate dedicated to preserving the correctness of these records. Record-keeping and custodianship of the Memories is considered a sacred duty.
Dwarves trust the accuracy of their Memories. However, both the casteless and the exiled surface houses are stripped from the Memories as though they never existed. In the recent times, altering the Memories for political gain has been an unfortuantely common occurrence. Furthermore, Memories lack or misinterpret key events of the early dwarven history. The history regarding the other fallen dwarven thaigs is missing from the Memories. Even the ancient language used to record Memories is not fully understood, and many runes have not so much been translated as inferred.