Sign it and date it. There's no special format so long as who you are and the purpose of the letter is clear.This set provides coverage of every aspect of probate law and estate and trust administration in Texas. It includes sample forms and letters. You can request copies of bank statements, mortgage documents, and other financial information from the deceased person's bank or financial institution. ​​ The Dallas County Probate Court requires a death certificate to be filed with all probate applications, including SEAs. A death certificate and a Small Estate Affidavit should do it, if he was not married and had no children. The "letters" are probate documents. They tell banks, creditors, and others that you're the one the Court has placed in charge of an estate. If a record is filed, the verification letter will include the person's name, the date of death, and the county where the death occurred.