At the age of twenty-seven, Mary returned to teaching and taught in the city's public schools for 27 years, retiring from her position as principal of School No.2 in 1883.
Mary returned to teaching. This was at the age of twenty-seven. Mary taught in the city's public schools for 27 years. This was at the age of twenty-seven. Mary was retiring from her position as principal of School No.2 in 1883. This was at the age of twenty-seven.