The wiki is the most up-to-date reference, but [url=http://dnd.etherealspheres.com/eBooks/DM_Tools/Adventures_2/FR%20-%20Silver%20Marches.pdf]this PDF[/url] should map out the region very well, and [url=http://online.anyflip.com/hszq/jpuv/mobile/index.html#p=1]this PDF[/url] of Storm King's Thunder is probably the most up-to-date sourcebook on the silver marches. [@Rising Dusk]