Howard E. Duff

To Jose Luis Macias,
 
The person you are seeking could be this one listed in the SSDI:
 
      H. Duff
        SSN: 
449-03-0559
        Last Residence:  78733
Austin, Travis, Texas
        Born:  23 August
1903
        Died:  Jul 1984
        State (Year) SSN
Issued:  Texas (Before 1951)
 
I think your best bet is to try and get the death certificate
from: 
 
       Bureau of Vital Statistics
        Texas Department of
Health
        1100 West 49th Street
        Austin, TX 78756-3191
        Telephone: 
512-458-7111
 
You could also try the County Courthouse in Travis County, and the Austin
Public Library for a death record or a death notice for July 1984.
 
Emilie Garcia
Port Orchard, WA ----