Routines with two decks of cards.
COINCIDENTAL CUT (Arthur Setterington): You place three blue-backed cards into three glasses. A spectator cuts a red-backed deck and takes three cards. They match your cards in the glasses!
PARITY COINCIDENCE (Aldo Colombini): A spectator says stop while you deal cards in pairs. During this process one card is face up in the middle of both decks. The two cards on each side of the reversed cards are matching!
BRAIN SELL (Peter Duffie): A spectator THINKS of one card from a blue-backed deck. From a red-backed deck the same card is removed and it has in big letters YOUR CARD on the back!
HYPNOTISN'T (Karl Fulves): Two spectators choose two cards, one from a red-backed deck and one from a blue-backed deck. The two cards match. Everything is done with the decks in the hands of the spectators!
TRIPLE COINCIDENCE (John Scarne): You and the spectator cut two decks three times and your three cards match the spectator's selections!
ACES FIND ACES (John Yeager): A spectator shuffles the deck and cuts it into four packets. You produce the four Aces from another deck and place them onto each packet. Your Aces find the four Aces in the other deck!
COLOR TRANSFER (Francis Haxton): The four Queens from a red-backed deck and the four Queens from a blue-backed deck are removed. The backs of the Queens change color!
SYMPATHETIC TRANSPO (Gus Southall): One deck is left aside. From the other deck a spectator picks a card. The same card turns face up in the first deck. Finally, the two cards transpose!
A LETTER AT A TIME (Peter Warlock): A spectator THINKS of one card. He spells the name of that card and he finds it. Then he spells the name of the same card in another deck and finds the duplicate of the selection. Remember, the card is only THOUGHT-OF!
PREDICTION-PLUS (Carl Wentworth): A blue-backed deck is given to a spectator. An envelope is given to another spectator. You show a red-backed deck and a spectator says a number. You count down to that number and show the card. The first spectator counts the cards in his deck: There are only 51 and the selected card is missing. It is in the envelope. Great routine!