Minn. Stat. § 600.11: PRINTER'S AFFIDAVIT.

The original affidavit of the printer of any newspaper, or of the printer's lead supervisor or court administrator, of the publication of any summons, notice, order, resolution, or other advertisement which by law is required or authorized to be published in such newspaper, and copies of the same, or of the record thereof, certified by the officer in whose custody the same may be, shall be prima facie evidence of such publication and of the facts stated therein. If any such publication relates to the sale of real estate, such affidavit may be filed for record with the county recorder of the county in which the real estate lies.