Maryhill Museum of Art will open for the season next Friday.  This year’s featured exhibition is The Columbia River:  Wallula to the Sea.  Maryhill Executive Director Amy Behrens says the exhibit is about humans’ relationship to the Columbia from past to present, and how we shape the river’s identity.  She adds Portland artists Thomas Jefferson Kitts and Erik Sandgren were commissioned to provide some of the works.  A companion exhibit entitled King Salmon features woodcuts and linocuts that have been added to Maryhill’s permanent collection over the last ten years.  Both exhibits will be on display through the entire season, which will continue through November 15.  For more information, go to maryhillmuseum.org.