In Italy, topo maps are readily available at Region websites. I suppose similar services are also available for other countries. Modern maps, unfortunately, represent the terrain as it is now, not 70 years ago. Whatever the differences, however, woods, hills and rivers are almost always the same [;)]. Urban areas are usually much larger, and highways might either be entirely new, or might have been straightened and improved after WW2. A virtual trip with Google StreetView is extremely useful.
This is the topo map of the Casa Berardi area: it is exactly 1620 metres wide (height is less important as long as it is larger than 1320 metres). The buildings in the North-West corner are modern industrial buildings, so they will not be represented in the TotH Map. The large road in the North-East corner is the main highway along the East Coast of Italy, built in the 1960s.
