If he was in Shawnee, OK 1900 you could check the 1900 Ind Terr census........death rec...........write to vit statistics for his death certificate......check the funeral homes around there and ask them for death info. I HAVE FOUND SO MUCH INFO FROM FUNERAL HOMES, I CANT STRESS ENOUGH THE ADVANTAGE OF CONTACTING THEM BY MAIL OR PHONE. They are usually so very nice and the funeral home generally asks the same info as the death certif......most of the info. Plus it will have the cemetery info on it. Check the Dawes Rolls also.