Nev. Rev. Stat. § 369.520 — Preservation of invoices

All
persons obtaining or manufacturing liquor under any license or permit and all
retail liquor dealers shall preserve for inspection and audit by the Department
and its agents, for a period of 4 years, all invoices and lists of liquors
purchased, manufactured or received, specifying:
1.  Kind and quantity of liquor.
2.  For liquors purchased or received,
names of persons from whom received.
3.  Place and date.