The earliest known visiting cards were the same size as the deck of playing cards.

FORBES: How Was The Standard Size Of A Credit Card Or A Business Card Established?

Remember that deck of playing cards the Pentagon handed out to soldiers featuring Saddam Hussein and his cronies?

NPR: U.S. Military Deals Cards to Save War-Torn Sites

Had Mexico stamped its most-wanted list on a deck of playing-cards like the one used in Iraq, the pack would now look a lot thinner.

ECONOMIST: Mexico's drug war

"He's playing with a different mental deck of cards, and it shows, " said Weekes, a former goaltender with the Rangers and Devils.

WSJ: Long Island's Hired Gun

Passengers passed the hours playing cards, walking the deck and going to see what was happening on other areas of the ship, Poret said.

CNN: Triumph passengers head home as ship heads for repairs