Indiana Code Title 30. Trusts and Fiduciaries § 30-4-2.1-11

Sec. 11. (a) A written statement or list that:

may be used to dispose of items of tangible personal property, other than property used in a trade or business, not otherwise specifically disposed of by the trust.

(b) To be admissible under this section as evidence of the intended disposition, the writing must be signed by the settlor and must describe the items and the beneficiaries with reasonable certainty.  The writing may be prepared before or after the execution of the trust.  The writing may be altered by the settlor after the writing is prepared.  The writing may have no significance apart from the writing's effect on the dispositions made by the trust.

(c) If more than one (1) otherwise effective writing exists, then, to the extent of a conflict among the writings, the provisions of the most recent writing revoke the inconsistent provisions of each earlier writing.