Grenewetzki, Dave: How To Make Your Own Trick Cards ©1980 Dave Grenewetzki, J&D Enterprises Softcover, stapled manuscript, 5.5x8.5", 8 pages Also printed in 8.5x11" comb-bound edition

Image courtesy eBay seller KochMagic

Comments: Original included samples of the cards

Contents (from eBay description, numbers are not page numbers):

1 Introduction
2 Construction Of A Playing Card
3 Starting The Split
4 The Secret Of the Split
5 Construction Of Gaffed Cards
6 References
7 Added Notes On Card Construction