Donald Mackay and Barbara Dearman, pictured at Fairfax offices, announce their engagement on 10 August 1955.

Mr and Mrs Mackay with Mary, Ruth, Paul and James.

Don Mackay.

Don Mackay.

Don Mackay.

Donald Mackay, pictured on the campaign trail in 1976 with James, 2.

Donald Mackay competes in a cross country run in 1977.

The Griffith Hotel temporarily closes its doors after the disappearance of Don Mackay in 1977.

Police create a crime scene around Donald Mackay's mini-van, pictured in the car park of the Griffith Hotel, where he was last seen in 1977.

Justice Woodward (second from left) inspects the car park of the Griffith Hotel where Mr Don Mackay disappeared.

Underworld figure Robert Trimbole was allegedly involved in Don Mackay's disappearance.

The Don Mackay statue in Griffith.