This folder contains correspondence, agreements, and other documents relating to the business of the Edison Telephone Co. of London, Ltd., incorporated in 1879, and the United Telephone Co., Ltd., incorporated in 1880. Much of the correspondence is by Arnold White, the secretary of the Edison Telephone Co. of London. There are also many letters by Edison's associates, George E. Gouraud and Edward H. Johnson. Related material can be found in the Primary Printed Series.

Much of the correspondence is in the form of cable messages. Code names were frequently used for the authors and recipients of these cables. The following is a list of the most commonly used cable codes:
Menlo Park London—George E. Gouraud
Quephone—Edison Telephone Co. of London
Phonos [or Phonos London]—Edward H. Johnson

All of the documents have been selected except for duplicate copies of selected documents.

Courtesy of Thomas Edison National Historical Park.