Wis. Stat. § 74.81: Procedure in authorized city.

In any city authorized by its charter to sell land for nonpayment of city taxes, the provisions of this subchapter relating to the time and place of payment and returns and settlements of the taxes and charges in the duplicate county tax roll shall apply in order to conform as nearly as may be to the procedure prescribed and followed under that charter, but otherwise the provisions of this subchapter shall govern.