Comparison of Distributions
Stonework Types versus Convict Gangs & Parties

Distribution of GNR stonework types, 1983. The best quality work occurs mainly around Wiseman's Ferry and at Mt McQuoid and Mt Simpson, while the walls of poorer quality are scattered along the road between Wiseman's Ferry and Mt Manning. Between Mt Baxter and Hungry Flat, the originally poor quality work has disintegrated or occurs only as small intermittent fragments which do not merit inclusion on this map.
[Karskens, p.98]

Distribution of convict iron gangs, road parties and bridge parties on the GNR, 1830 and 1831. [Karskens, p.101]

Reference:

Four Essays about the Great North Road, G. Karskens: CTP Occasional Monographs Series, September 1998.