Mr. and Mrs. Mario Gonzalez announce the engagement and upcoming marriage of their daughter Petra to the Rex Vance Wilson, son of Mr. and Mrs. Patrick Lee, Rapid City. A wedding date has been set for Saturday, Aug. 20. Petra graduated in 1985 from Bennett County High School in Martin and is currently attending Oglala Lakota College as a part-time student while working at Northgate Bingo. Rex graduated from Central High School in Rapid City in 1984 and is employed at Days Inn. He will enter the Marine Corps in January.