Versions of Iowa Code 602.10115 - Proof of authority on LawServer 2023 Iowa Code 602.10115 – Proof of authority 2022 Iowa Code 602.10115 – Proof of authority 2020 Iowa Code 602.10115 – Proof of authority 2018 Iowa Code 602.10115 – Proof of authority 2016 Iowa Code 602.10115 – Proof of authority 2014 Iowa Code 602.10115 – Proof of authority. 2009 Iowa Code 602.10115 – Proof of authority