User blog comment:Hashimashadoo/An Update and a Commentary/@comment-3030475-20140326120151/@comment-9502-20140326230127

The stuff regarding Netheril is pretty much all from Slade's Netheril book, yes. Stuff regarding Calimshan and its neighbours is mostly from Empires of the Shining Sea and that stuff about the Baphomet Cult was from the WoTC website series about the Shadow Path portal network.