Wis. Stat. § 889.03: Copies certified by state law librarian; fees.

Matter contained in any book or pamphlet in the state law library, purporting to be a copy of the opinion of any court, or of any statute, law, act or resolution of any state, territory, the United States, or any foreign country, certified by the state law librarian, is prima facie evidence of the contents of such opinion, statute, law, act or resolution. The fee for such certification is the same as that provided for similar certification by the clerk of the supreme court.