Article 13. Dispositive Instruments And Ancient Writings of California Evidence Code >> Division 10. >> Chapter 2. >> Article 13.

Evidence of a statement contained in a deed of conveyance or a will or other writing purporting to affect an interest in real or personal property is not made inadmissible by the hearsay rule if:
  (a) The matter stated was relevant to the purpose of the writing;
  (b) The matter stated would be relevant to an issue as to an interest in the property; and
  (c) The dealings with the property since the statement was made have not been inconsistent with the truth of the statement.

Evidence of a statement is not made inadmissible by the hearsay rule if the statement is contained in a writing more than 30 years old and the statement has been since generally acted upon as true by persons having an interest in the matter.