The Sydney Herald - 16 October 1840
National Library of Australia (here)
These shells were interred during the construction of the original homestead after having already had a long sea voyage to Australia and then being transported the arduous trip from the Sydney colony to the Limestone Plains. Were these walnuts the luxury food of James Wright? or were they a treat for the convict stonemasons? we will never know, however, someone threw their discarded shells into the walls...
Factfile - Australian walnut Industry Association (here)