Versions of Iowa Code 680.2 - Permissible proofs on LawServer 2024 Iowa Code 680.2 – Permissible proofs 2023 Iowa Code 680.2 – Permissible proofs 2022 Iowa Code 680.2 – Permissible proofs 2020 Iowa Code 680.2 – Permissible proofs 2018 Iowa Code 680.2 – Permissible proofs 2016 Iowa Code 680.2 – Permissible proofs 2014 Iowa Code 680.2 – Permissible proofs. 2009 Iowa Code 680.2 – Permissible proofs