This folder contains correspondence relating to Alfred O. Tate's role as Edison's private secretary, along with occasional items pertaining to Tate's private life. Routine letters addressed to Tate in his capacity as Edison's secretary or representative that do not fall under the main subject categories are generally filed in this folder. Among the personal correspondence are letters from various Canadian business associates dealing with such matters as Tate's possible appointment to the board of directors of the Queenston Land Co. There are also documents regarding tests made on the Craig-Roberts storage battery.

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.