FAIRMONT — An open house celebration honoring Lowell “Butch” and Diane Olson’s 50th wedding anniversary will be held 4-7 p.m. Sunday, July 25, at 1781 90th Street, Fairmont. They were married July 23 1971. If you’re unable to attend the open house, cards and anniversary wishes will reach them at 1781 90th Street, Fairmont.