Worshipful Company of Makers of Playing Cards - The Company was originally incorporated to regulate the trade of making playing cards in London, which had suffered from the importation of foreign cards and cheap and inferior cards manufactured in the country.
World of Playing Cards - A site for exploring playing cards, their history, design and manufacture, and see many different types of cards from around the world.
International Playing-Card Society - The International Playing-Card Society has been working for over 25 years to understand the development of playing-card designs and games. Members range from beginners through to expert in their fields with all aspects of playing-card activities represented-games players, collectors and those interested in the historical aspects of playing-cards.