Great Wall History Maps

Can anyone advise where to find a map that shows clearly the

earlier Qin east (anti-Wei) wall

earlier Zhou south wall

These are not the later northern Qin, Zhou (and Yan) walls.

I have a book in production about walls and need photographs of pre-Ming Chinese long walls.

Would anyone be able to advise me where I could find such photographs which I could use for publication.

They would be fully attributed and thanked.