Came across this one this morning, range of old maps some useful some not, zoom into the areas you are interested in and the column on the right will show you what maps are available, i would assume most maps come from trove or similar. georeferencing is a bit average but you can play around with it a bit and improve them, otherwise jut look at the maps and ignore the overlays.
http://www.oldmapsonline.org/
Enjoy, cheers,
http://www.oldmapsonline.org/
Enjoy, cheers,
