Priest, Carroll K.: The Blindfold Enigma ©1980 Carroll Priest, CA Softcover, saddle-stitched, 5.5x8.5", 22 pages ©1982 Second Edition Published by Martin Breese, London, England

2nd Edition Image courtesy eBay seller qr

Comments: treatise on how to make and apply a blindfold; tests include Blindfold Card Drive and Marksman Test.
Available as an ebook from Library.com.

Contents (from 2nd Edition ToC):

1 Introduction
3 The Secret Method
11 Tests: not all listed here
15 - The Marksmanship Test
21 Conclusion