What is the fine-grained topic of the following text: Thanks to a collaboration by the Northern Lights Art Council and the North Dakota Museum of Art, art pieces by Walter Piehl, Jim Dow, Carol Hepper, Todd Hepper, and many more will be on display at the Cavalier County Courthouse from October 10th – 18th. Only return the topic.
Art exhibition at Cavalier County Courthouse by Northern Lights Art Council and North Dakota Museum of Art.