The description of land in all instruments, conveyances, and encumbrances describing lots in or referring to plats of survey or to plats made by a county auditor, or by a county surveyor for the owner, and placed of record by a county recorder more than ten years earlier, are legalized, valid and binding.
Iowa Code § 589.23
84 Acts, ch 1090, §18; 91 Acts, ch 183, §28