A short (and incomplete) list of sources which have influenced the content and development of the The Kalmar Union timeline.
- Europe: A History - Norman Davies
- Europe's Tragedy: A New History of the Thirty Years War - Peter H. Wilson
- God's War: A New History of the Crusades - Christopher Tyerman
- The Great Sea: A Human History of the Mediterranean - David Abulafia
- Guns, Germs, and Steel: The Fates of Human Societies - Jared M. Diamond
- Millennium: The End of the World and the Forging of Christendom - Tom Holland
- The Plantagenets - Dan Jones
- Poland: A History - Adam Zamoyski
- Vanished Kingdoms: The History of Half-Forgotten Europe - Norman Davies
- Q - 'Luther Blisset'
- Altai - 'Wu Ming'
- Wolf Hall
- http://bigthink.com/articles?blog=strange-maps - Strange Maps Blog
- http://www.statice.is - Need a random Icelandic (or Vinlandic or Álengsk) name? Here's my go-to place.
- http://cyon.se/Alkebu-lan_1260AH_HiRez.jpg - Interesting Alt-History map of Africa (or 'Alkebu-Lan'), had the Black Death crippled Europe permanently.
- http://www.Wikipedia.org - Wikipedia (Goes without saying really doesn't it?)
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