Mary Letitia Caldwell

Mary Letitia Caldwell (December 18, 1890 – July 1, 1972) was an American chemist. Growing up she valued education and strived to achieve. She was an instructor at Western College teaching chemistry. She was known for being unique and descriptive along with being family orientated. Maria was in a wheel chair due to muscular disability. Most of her work centered on amylase, a starch enzyme, most notably finding a method for purifying crystalline porcine pancreatic amylase. She spent sixty years doing this.