2024 26 USC 4423 – Inspection of books

2023 26 USC 4423 – Inspection of books

2022 26 USC 4423 – Inspection of books

2021 26 USC 4423 – Inspection of books

2020 26 USC 4423 – Inspection of books

2018 26 USC 4423 – Inspection of books

2017 26 USC 4423 – Inspection of books

2015 26 USC 4423 – Inspection of books

2014 26 USC 4423 – Inspection of books