everything by william dalrymple and pankaj mishra. some of mishra's stuff is more present day than history, but it's rooted in a lot of postcolonialist analysis which of course draws heavily on history.

http://www.amazon.com/The-Last-Mughal-Dynasty-Vintage/dp/1400078334

http://www.amazon.com/From-Ruins-Empire-Intellectuals-Remade-ebook/dp/B0071W4UH4

also read http://www.amazon.com/Empires-Indus-The-Story-River/dp/0393338606 by alice albinia. very well written, it's both a travelogue and a history primer of the communities along the indus. great read