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Colin D. Wilson
The Sindhi Conspiracy from the Mystara Mailing List posted 13 February 2001.
Wendar timeline from the Mystara Message Board posted 12 May 2006.
The Heldannic Order gazetteer from the Mystara Message Board posted 8 May 2007. (done with JTR)
Naming Spell Levels from The Piazza posted 20 September 2010.
Pirate lords of the Sea of Dread from Threshold Magazine issue 3 dated 25 March 2014.
Gaz LJ1: The Sea of Dread from The Piazza posted 9 January 2017.
Peoples of Hyboria Gazetteer, English translation from The Piazza posted 22 March 2021 [Italian original, Popoli di Hyborea Gazetteer version 1 by Omnibius current as of 20 January 2011].