Iowa Code § 305B.3
1. Contents. In addition to any other information prescribed for a particular notice, all notices given pursuant to this chapter shall contain the following information:
3. Published notice. If the museum does not know the identity of the lender, or does not have an address for the lender, or if proof of receipt is not received by the museum within thirty days of mailing a notice under subsection 2, notice is deemed given if the museum publishes notice at least once a week for three consecutive weeks in a newspaper of general circulation in both of the following:
88 Acts, ch 1117, §3
Referred to in §305B.13