Bob and Loretta (Kay) Powell, of Bend, will celebrate their 50th anniversary with an open house hosted by their children from 2-5 p. m. Saturday at Foundry Church in Bend.The couple were married Aug. 16, 1963, at First Baptist Church in Salem. They have two children, Wendy and (Brendan) Shine, of Renton, Wash., and Lisa, of Bend; and two grandchildren.