The Pick - Journal of the Great North Road - Volume 9, August 2012 - Evidence.
Experimental and deducted, E.A. Roberts
I survived, Geoff Potter
Blasting and quarrying, Grace Karskens
Physical evidence of the method of building the Great North Road, E.A. Roberts
Following Simpson's track, Gregory Powell
More physical evidence Old Maitland Road, Elizabeth Roberts.
Water for road gangs, Ian Webb.
Cranes and oxen, 1818 to 1849, Ian Webb.
See the Convict Trail website for details.