need help obtaining a title/please

[VIPERICH]

a guy gave us a 54 chevy pickup about 5 years ago.he kept saying he will bring title ect.well the guy cant find the title and is having some bad health problems and is about impossible to get ahold of.it was his fathers truck and he passed away then when he had no use for it he gave it to us.we have someone willing to pay decent money for the truck and i really need help getting a title for it.can anyone point me in the rite direction?thanks i really need help on this one.