Try contacting Brenda McWilliams, Library Associate, in the Local and Family History Department of the Tyler Public Library.She might be able to locate something in the Tyler Courier Times relating to your father's murder.
The Tyler Public Library 201 S. College Avenue Tyler, TX 75702-7381
Check with the Library; their fee for a copy of this would be VERY small.There is no way that this matter would not have been covered in the newspapers.GOOD LUCK, I hope this info. will assist you!!!!!!!!