Burglars have stolen a man's laptop which had on it the last photos of his wife taken before she died, and his brain-damaged son's medical notes.
'Priceless' family pictures were stored on the stolen laptop
Sasha Roberts was killed on the M2 in Kent four months ago. Her son, Lio, five, suffered a broken leg and brain injury and was in a coma for two weeks.
Martin Spinelli, who said the thieves stole "priceless" memories, has offered £500 for the laptop's return.
He also posted notices offering the reward across Lewes, where he lives.
He said: "To have this happen on top of everything else is just incredibly difficult and is really testing my faith in humanity.
"I just want it back. It's worth so much more to me than they can sell it for."
He said the memories stored on the machine were "priceless".
Lio, whose digital X-rays, MRI results, medical notes and contacts from foreign consultants were stored on the computer, still needs another operation.
He is receiving neurological care at Chailey Heritage Clinical Services in North Chailey, East Sussex.
Mr Spinelli said the two-year-old machine was a silver and black HP Pavilion 1240 with an American keyboard, with "very little resale value".