The Barrington
atlas has features that are color
coded for different time periods.....but the
Roman era is all the same color code.
I too would be interested to know of a
type of map that would show the empire at any given time period. Most
maps of the whole empire show it in 117AD at it's furthest extent. It would be interesting to see how
provincial boundaries changed over time. The Barrington
Atlas doesn't show these boundaries because they changed so often over the centuries.
My big complaint about most
maps of the city of
Rome is that they tend to show the later city, not the
Rome of the 1st century. The
Rome of
Augustus did not have the colosseum, the
forum or
baths of
Trajan, the mausoleum of
Hadrian, ect... I've purchased the Forma Urbis Romae folio set by Lanciani and it is very difficult to look at the map from one era's point of view. The Topographical Dictionary of Platner and Ashby and the new one by L. Richardson make up some of the ground though.