Versions of See prior versions of a law on LawServer 2024 36 CFR 51.66 – Under what conditions will a concessioner obtain a leasehold surrender interest in existing real property improvements in which no leasehold surrender interest exists? 2023 36 CFR 51.66 – Under what conditions will a concessioner obtain a leasehold surrender interest in existing real property improvements in which no leasehold surrender interest exists?