Looking for Sarah Mary Douglas

Looking for Sarah Mary Douglas. Married to John M. Slusher. 3 children: Mary Magdalene (Magadline) b. 1895 in Ada, Oklahoma, Charlie b. bef 1900, and Maynard. Sarah died of pneumonia shortly after giving birth to Maynard, he died a few days later, about 1900-1901. Any info appreciated. Have much on descendants of Mary M. (daughter).