Iowa Code Title XIV. Property [Chs. 555-594A] § 589.15. Tax deeds legalized

That in all instances where tax deeds have been issued by county treasurers in the absence of the report and entry required by section 7283, Code 1939, or corresponding sections of earlier Codes relating to collection of costs of serving notices, such tax deeds shall not by reason of omission to make such report and entry be held invalid, but are hereby legalized. Nothing herein contained shall be construed as curing any other defect in tax deeds than that herein specifically described. Nothing herein contained shall be so construed as to affect pending litigation.