One thousand whisky barrels were unloaded from a cargo vessel at Carnlough Harbour in September 1967.
The consignment was to be transported onwards to Bushmills Distillery.
The barrels had been imported with a delivery of malt and barley also bound for the County Antrim whisky producer.
The barrels were made of American oak. The bottles were produced at a plant near Edinburgh and shipped across the Irish Sea by small coasters to Carnlough.
A spokesman at Bushmills said: “We have introduced this service as part of our expansion programme because it is relatively convenient to the distillery.
The report also noted that the barrels cost £13 each.