An Hermetic Origin of the Tarot Cards? A Consideration of the Tarocchi of Mantegna (Adam McLean)
Tarot Origins: Sorting Out History and Myth (George Leake) article connecting tarot with the triumphi paradigm and related influences, such as the danse macabre.
Sola Busca (Tea) site devoted to this anomalous 15th-century deck. Includes pictures of each card in the modern restoration deck
The Civilization of the Renaissance in Italy (Jacob Burckhart) online book on Renaissance history and culture
Medieval Lecture List (Lynn Nelson) course notes on medieval history
International Playing Card Society information on the history of cards, including tarot
Game Report: Early French Tarot (Justin du Coeur) rules for the game of tarot, as played in 17th-century France
Gallery of Tarot Decks pictures and description of a number of decks, including some historic patterns
Playing-Card FAQ (Daf Tregear) lots of information on playing cards and their history
Tarot of Marseilles (Camoin and Jodorowsky) commercial site promoting a new, restored Tarot of Marseilles; lots of information and pictures of historic Marseilles decks
Alida tarot-card seller in San Marino, offering many decks not available in US; nice web store with pictures of all decks; excellent service; recommended.
Il Trigono Italian tarot-card seller, lots of pictures, slightly different selection than Alida
Lo Scarabeo Italian publisher whose catalog includes a number of reproduction and restoration decks
The Planets and Their Children: A Blockbook of Medieval Popular Astrology some imagery from these 15th-century astrological books resemble tarot cards