27 CFR § 18.17
Retention of documents
April 24, 2020
The proprietor shall maintain a file of all approved applications and other documents, on or convenient to the concentrate plant premises, available for inspection by appropriate TTB officers.
(Approved by the Office of Management and Budget under control number 1512-0046)
[T.D. ATF-104, 47 FR 23921, June 2, 1982, as amended by T.D. ATF-381, 61 FR 37003, July 16, 1996]