Originally Posted by ozrutan
Hmm, this is probably good point
This does not make it impossible, just improbable. There are many good maps around, however they are generally just modern day interpretations. For books a good start is the Putzger historical world atlas, a fine piece of German atlas-work
About the non-existance of a territorial concept like ours, I wouldn't let it discourage you, but it might simply be a good thing as a note, a remark to be included.