Versions of Iowa Code 166.6 - Dealer\'s permit on LawServer 2023 Iowa Code 166.6 – Dealer’s permit 2022 Iowa Code 166.6 – Dealer’s permit. 2020 Iowa Code 166.6 – Dealer’s permit. 2018 Iowa Code 166.6 – Dealer’s permit. 2016 Iowa Code 166.6 – Dealer 2014 Iowa Code 166.6 – Dealer’s permit. 2009 Iowa Code 166.6 – Dealer’s permit