stoners in pulaski county, missouri

I am looking for children by the name of Ruth E. Stoner and Daisy Stoner, Floyd Stoner,(name at the time of birth before adoption), that were adopted between the years of 1936 and 1939. My grandfathers name is Walter Stoner and we are anxiously looking for these children. They lived in Pulaski Co, Missouri then taken to St. Louis to a foster home,when their mother died of TB. Anyone with any information on this would be greatly appreciated.