Ouellet, Gary: Threshold ©1981 Gary Ouellet, Camirand Academy of Magic, Canada Softcover, saddle-stitched, 8.5x11", 41 pages

Image courtesy eBay seller pxspxs

Comments: Masters of Magic Volume 1 Number 5. Edited and photographed by Guy Camirand.
Breakthrough In Torn And Restored Signed Card, plus more. 

Contents:

3 A Message From The Editor
3 Important Learning Note
4 Introduction By Reveen
5 Foreword

6 The Incredible Vanishing Deck: bare-handed vanish
7 - Preambule
9 - The Vanish
12 The Capricorn Card: deck vanishes except for selection
15 Card Switches
16 The Ouellet Switch
18 - Practice Drill
20 - Common Mistakes And Tips
21 Uses For The Ouellet Switch
21 - Brainstorm: face up card from blue deck is chosen and has a red back
22 - The Solar Oven
22 - Packet Switch Photos
23 - The Curry Open Prediction
25 The Switch Syndrome
28 Threshold: torn & restored where spectator & magician both sign the card, and spectator tears corner
29 - Presentation
34 - The Drop Switch Sequence
34 - The One Handed Fold
38 Why Threshold Works
39 The Anxiety Factor
41 The Last Word