Versions of 26 CFR 1.72-1 - Introduction on LawServer 2024 26 CFR 1.72-1 – Introduction 2023 26 CFR 1.72-1 – Introduction 2022 26 CFR 1.72-1 – Introduction 2021 26 CFR 1.72-1 – Introduction 2015 26 CFR 1.72-1 – Introduction 2014 26 CFR 1.72-1 – Introduction 2010 26 CFR 1.72-1 – Introduction 2009 26 CFR 1.72-1 – Introduction