I'm reading Colleen McCullough's Masters of Rome series, and the maps in the books are microscopic. I'm looking for diagrams of Rome circa 100-50 BCE, and various regions of the Italian peninsula, Asia Minor and both near and further Gaul. Finding detailed maps online has been surprisingly difficult. Any suggestions?

Some examples of what I've found so far:

http://exurbe.com/wp-content/uploads/2013/08/rome.gif

http://catholic-resources.org/AncientRome/Platner-ancient_rome-96.jpg

http://www.the-romans.co.uk/map.htm