Acknowledgements                                                  6

Introduction                                                              7

Chapter One:T.1877-1893                                        8

Edison’s Phonograph is Born                                   9

Augustus Stroh, Scientist of Sound                       11

Other Innovators in the Field. Sound                     13

Edison's Enthusiasm Reawakens                            18

Spite Marriage                                                         21

Berliner;Achieves the Disc Record                         33

Chapter Two: 1894-1903                                        35

The Genius Behind Columbia’s Success                39

The Cylinder Talking Machine Business                45

The disc Talking Machine Business                        49

Chapter Three : 1904-1911                                   151

A brief History of the Theory Behind

C.B. Repp’s Vitaphone                                         151

The Visceral Vitaphone                                        153

The “ Vertical” ‘Teens and the Realignment of

the Market Following the First World War..        168

Chapter Five: 1920-1929                                      192

The Cabinet is King                                              192

A Menace in the Air                                             202

'The Spark of Innovation                                      211

Technology and Art                                              218

Edison: "The First Shall be Last"                          218

Value Code Key                                                   235

Bibliography                                                         236

Glossary                                                                237

Index                                                                     238

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