Goto: http://www.sos.mo.gov/archives/resources/deathcertificates/ to order a photo copy of her death certificate from 1923, if you are interested. I checked and there is one for her. The death certificate usually tells when someone was born and when they died. If Mary was married, it will tell who her husband was, and her parents, as well as who filled out her death certificate and what she died of, residence, etc. Good luck! Janette