Hull, Burling: The Real Secret of Stage Second Sight Acts ©1916 Burling Hull, NY Softcover, folded manuscript, 8.5x11", 19 pages

1935 Edition Cover Image courtesy eBay seller Saskiatwo

Image courtesy eBay seller JayAndLefty

Comments:While the electric communications system would be better replaced with modern technology, the codes and approaches may still be useful.
The contents below are for the older 1916 edition.

Contents (from book):

2 How I Came to Write this Manuscript
4 Instructions for Second Sight Act
5 The Six Principles Employed
6 The Improved Plan Devised by the Author
6 Word Code
8 A "Be Careful" or "Stop" or "Change the Order" Signal
9 Heightening Effect
9 How to Describe Unfamiliar Articles
10 Another Plan
10 Surprise Reading of Coins
12 Blackboard Tests
14 The Silent "No Code" System of Second Sight
14 The Stage Instructing Co.'s $5.00 Course in Stage Mind Reading or Second Sight
16 The Instructions Sold by Laura G. Fixen as The Zancig System & Carters Method
18 Howe and Howe System & Codes
19 The Series System of Arranging a List of Articles
19 The Three Part Number System