Growing up she valued education and strived to achieve .
Mary Letitia Caldwell ( December 18 , 1890 -- July 1 , 1972 ) was an American chemist .
Growing up Mary Letitia Caldwell valued education and strived to achieve .
Mary Letitia Caldwell ( December 18 , 1890 -- July 1 , 1972 ) was an American chemist .