Don and Diane (Geissbuhler) Olson, Monroe, will celebrate their 40th wedding anniversary on Sept. 30, 2012.Don grew up in Spring Green and Diane in Shullsburg. The couple met in Shullsburg while Don was working for the telephone company and Diane was his waitress. The couple married on Sept. 30, 1972 at the Immanuel United Church of Christ, Darlington.The couple have been active residents of Monroe for 33 years.