I'm trying to find a big, comprehensive map of Waziristan and Pakistan's North-West Frontier, from Peshawar to the Durand Line, including Baluchistan, to help me with the writing of my PhD. Ideally, and this is tough, I'm looking for a map that shows how the British expanded the road net on the Frontier from 1919-1939. I've got some smaller ones, mostly from old British service journals, but was looking for a big one to be able to glance at while I'm writing. Anyone know where to start looking for maps and atlases? Thanks.