Kane, Peter: Tetrad One ©1980 Peter Kane Softcover, saddle-stitched, 5.5x8.5", 16 pages

Image courtesy Shore Books, London

Tetrad Cards Image courtesy sic!-Verlag, Germany

Comments: Effects with Peter Kane's Tetrad Deck. The Tetrad deck was originally invented in 1969 by Peter Kane, and originally used for educational purposes. The cards feature four symbols - Circle, Cross, Triangle and Square, and four colors, Red, Green, Yellow and Blue.

Contents (from book ToC, numbers are not page numbers):

1 The Tedtrad Concept
2 A Couple of Moves
3 Impromptu Coincidence
4 Annemann's Scratched Pip Principle
5 The Tetradic Square
6 The Subliminal Force
7 Unbelievably Stacked
8 The Tedtrad Prediction