I wanted to share this great scan of the Firman of Abd al-Rahman Khan (the Iron Amir of Afghanistan, r. 1880-1901). I have students in my Afghan history courses read the firman (as translated in David Edwards, Heroes of the Age:Moral Fault Lines on the Afghan Frontier (1996)), but the image of the accompanying map always comes out a bit too blurry. This copy, scanned by the Afghanistan Digital Library project at NYU is incredibly crisp and detailed.
Speaking more generally, check out the Afghanistan Digital Library’s collection. It has lots of great material for the study of Afghan history, covering the period of 1870-1930 (with the hope of expanding in the future).