On Saturday, April 21, head on over to the Oskaloosa Square for a day of family fun, art, and music for the 5th Annual ‘Chalk the Walk’ event from 10:00 AM until 12:00 PM. This is a free-will donation event with all proceeds going to the United Way of Mahaska County. About Chalk the Walk: This event is an annual fundraiser for Operation Backpack, a program which provides local children with essential school supplies. For more information, call 641-676-3400.