Marlo, Ed: Side Steal ©1957 Edward Marlo, Chicago, IL Softcover, saddle-stitched, 5.5x8.5", 64 pages

Image courtesy eBay seller Jondb500

Comments: Chapter 4 of Marlo's Revolutionary Card Technique.
The chapters of Marlo's Revolutionary Card Technique Include (info courtesy Genii's Magicpedia):
Chapter 1 Miracle Card Changes (1954)
Chapter 2 Action Palm (1956)
Chapter 3 Fingertip Control (1956)
Chapter 4 Side Steal (1957)
Chapter 5 The Tabled Palm (1957)
Chapter 6 The Faro Shuffle (1958)
Chapter 7 Faro Notes (1958)
Chapter 8, 9, 10 Seconds, Centers, and Bottoms (1960)
Chapter 11 The Multiple Shift (1961)
Chapter 12 Card Switches (1961)
Chapter 13, 14 Estimation (1962)

Contents (page numbers courtesy Marc Decoux, magicbooks.be):

1 Introduction
2 The Technical Steal
5 The Deliberate Side Steal
7 The Curled Forefinger
9 The Bold Steal: four handlings
12 The Bottom Bold Steal
12 The Bold Stop Effect: three methods
13 A Slight Difference: The Pinch Technique
14 Standard Side Steal
15 On the Left Side
15 Multiple Holdout
16 Left Hand Side Steal
18 Color Steal
19 Almost Standard
20 The Finger Flutter: four methods
22 The Clip Steal
24 Clip Steal to Bottom
25 Clip Steal Color Change
27 Palm Positions: four positions
29 Side Steal to Bottom: six methods
36 Multiple Rear Palm Steal
37 To the Top: two methods
38 Card From Case
39 The Stop Effect
40 The Insertion Steals
41 Full Left Hand Steal
43 Right Hand Steal
45 The Diagonal Steal
47 Side Steal Cover Ups
48 First Cover Up
49 Another Handling
50 Clip Steal Cover Up
51 Between the Aces
53 Dribble Stop Effect
54 Card Stab
56 For the Purists
58 Concluding Observations
59 The Dribble Replacement