Ganson, Lewis & Geissler-Werry: A Fantasy In Thimbles Werry's Fantastic Thimbles ©1979 The Supreme Magic Co. Ltd., Devon, England Softcover, saddle-stitched, 8x10", 33 pages Also available as an e-Book from Lybrary.com

Image from Magicref

Comments (Lybrary.com): Routines for the Werry Nesting style thimbles. Vernet also makes nesting Thimbles.
This was part of the famous Ganson Teach-In series originally published by Supreme Magic Inc. Rights are now owned by Martin Breese.

Contents (from book, updated Dec 2018):

4 Introduction: about the Werry Fantastic Thimbles and their nesting property
5 The Basic Moves
5 - The Lifting Move: one Thimble to two
6 - A Complete Vanish: of one thimble
7 A Simple Routine: uses the sleeves as a servante
8 A Novel Opening: alternate idea for using the routine as a opener
9 Thimble Through Silk (Werry): thimble penetrates a silk
11 Push-Thru  Pull-Thru (Ken De Courcy): a thimble is pushed through a silk, and then the silk is pulled down over the thimble
15 Thimble Dye (Werry): color change
17 Technicolour Thimbles (Werry): production of four different-colored thimbles at the fingertips
20 Uncle Henry's Thimble Trick (Ken de Courcy): thimble vanishes, reappears, changes color and more
24 Dean Metcalfe: B&W Photo of Dean
25 Dean Metcalfe's Fantastic Thimble Routine
25 - Introduction
26 - Effect: thimble appears in silk, penetrates silk, vanishes, then multiplies with 8 thimble climax
26 - Requirements: four thimble pairs, silk handkerchief, holders
27 - Presentation
27 - Performance
33 - Additional Climax
353 Conclusion