The Mary Nichols in these two obituaries was the daughter of David Voorhies of TN and the wife of William A. Nichols, also of TN. Descendants were fortunate to have obituaries from these two newspapers. Based on the Oklahoma obituary, I ordered a death certificate search from the state of Oklahoma. Their response in November 2015 was that they were unable to locate a death certificate. You never know until you ask! Possibly someone else working on this line will see this posting and save a bit of money.