Jun. 11—Two Northland residents have received long prison sentences after pleading guilty to charges involving the sexual abuse of a minor and production of child pornography. Matthew James Gunderson, 31, of Sturgeon Lake, was ordered to serve 30 years, while Amanda May Walsh, 39, of Aitkin, was sentenced to 19 years in federal prison. U.S. District Judge Patrick Schiltz also ordered each to .