26 USC 5124 - Records

(a) Receipts 
Every retail dealer in liquors and every retail dealer in beer shall provide and keep in his place of business a record in book form of all distilled spirits, wines, and beer received, showing the quantity thereof and from whom and the dates received, or shall keep all invoices of, and bills for, all distilled spirits, wines, and beer received.
(b) Dispositions 
When he deems it necessary for law enforcement purposes or the protection of the revenue, the Secretary may by regulations require retail dealers in liquors and retail dealers in beer to keep records of the disposition of distilled spirits, wines, or beer, in such form or manner and of such quantities as the Secretary may prescribe.
(c) Cross references 
For provisions relating to the preservation and inspection of records, and entry of premises for inspection, see section 5146.