Wis. Stat. § 440.81

(1) A crematory authority shall maintain a permanent record of each cremation at its place of business consisting of the name of the decedent, the date of the cremation, and a description of the manner in which the cremated remains are disposed. 36440.81 SAFETY AND PROFESSIONAL SERVICES (2) A crematory authority shall maintain as permanent records the documentation specified in s. 440.78 (1) and copies of receipts under ss. 440.77 (1) and 440.79.