This folder contains correspondence and other documents addressed to Edison's private secretary, Alfred O. Tate, which do not fall under the main subject categories. Some of the documents were sent to Tate in his capacity as Edison's secretary and deal with routine business and legal matters. Other items relate to Tate's private affairs, such as his membership in various clubs and societies. Also included are routine documents pertaining to the phonoplex system of telegraphy and to business activities unrelated to Edison.

Letters addressed to Tate that deal with a specific subject or the business of a particular company can be found in their appropriate subject folders.