Go to Google.com and type in Social Security Death Index. Click on that. I have had better luck just typing in the last name and the state where I think they may have applied for their card and that will give his SSN if your lucky. Also on Google you can type in Standard Form 180 it will bring you to the NARA site in the search box type in Standard Form 180 again and you can print out the form. There are two sides to print. The back side will have the address in ST Louis to mail. The VA office is a good place if there is one around.