Mr. and Mrs. Stacy Meister of Washburn and Mr. and Mrs. Wendell Blackstone of Perham announce the engagement of daughter and son, Coleen Ardith Meister and Barry Alan Blackstone. The bride-elect is a 1970 graduate of Washburn District High School and attended Bob Jones University for two years. She is employed by W. T. Grant Co. in Caribou. Her fiance is a 1969 graduate of Washburn District High School and is a senior at Bob Jones University, Greenville, S.C., where he is majoring in Bible. A June 21 [1973] wedding is planned.