Duffie, Peter: Cards In Principle ©1994 Peter Duffie Softcover, report-bound, 8.5x11", 25 pages Also in eBook format

Image courtesy Hawthorn Books, Bristol, U.K.

Comments: Available as an ebook from Lybrary.com

Contents (more detailed descriptions at at Lybrary.com, page numbers added April 2022):

1 Auto - Split: double card revelation
2 The Suabian Twist: combo of Vernon's Twisting the Aces and Hofzinser Ace Problem
3 Aura Best: puzzling routine based on Paul Curry's The Whispering Joker
4 Every Picture Tells A Story: inspired by Simon Dixon's Paradox Aces
5 The PallaD Principle: series of transpositions occur
6 - Walton's Warm-Up: turns the previous principle into a commercial routine
7 The Demonique Deal: staggered version of the classic Daley Mental Poker effect
8 The Diary Of Expectation: classic diary prediction uses one diary and one regular deck
9 Solid Golde - Easy Action: variation of Roger Golde's The Favorites
11 Subconscious Poker For Two: variation of Joseph K. Schmidt's Subconscious Poker II
13 Quantity Surveyor: came about while playing with Howard Adams reverse stack principle
14 Pet Symmetry: handling of the Hamilton/Finnell Free Cut Principle
15 Ideal Holmes: inspired by Steve Hamilton's Thinking Out Loud
16 All Square Forecast: using the Magic Square principle
17 Ditto: This magi-comedy mental item
18 NUMB....ers: insoluble number prediction
19 Thotover: transposition of a very simple construction
20 Eightsum: based on Lewis Jones' Happenstance
22 Waltz With The Devil: presentation for Curry's Dance with the Devil
23 Sure Thing: partly inspired by Elmsley's Mexican Prediction
24 A Brainstorm In Glasgow: Jokers trap the cards and more