Backgammon History
   Brief history mentioning the names of many alternate forms.
   http://www.tradgames.org.uk/games/Backgammon.htm

Hardy's Tabular History of Backgammon
   Backgammon historical timeline -- illustrated, annotated, and footnoted. In English and German.
   http://www.hardyhuebener.de/engl/geschichte.html

The Origin of Backgammon
   History of backgammon, focusing on the rules of predecessor games. In French and English.
   http://perso.orange.fr/bckg/english/accueil.htm