A memorial service will be held at the Waterloo Middle School tomorrow. 59-year old Stephen Smith-a teacher in the Waterloo School District-died from a heart attack on Friday. His wife- 58 year old Kathleen Smith died Saturday from s brain hemorhhage. The couple is survived by their six children. The memorial service tomorrow, on what would have been the Smith’s 37th wedding anniversary, begins at 7pm at the middle school auditorium.