This folder contains correspondence and other documents relating to the business affairs of various regional sales companies under contract with the North American Phonograph Co. Some of the letters are by local company officials seeking to purchase phonograph components or offering suggestions about technical improvements. There are also letters about the organization of the National Phonograph Association and letters from the Columbia Phonograph Co. about the use of the phonograph in treating deafness. Some of the documents may be partially illegible due to water damage or faded ink.

Approximately 70 percent of the documents have been selected. Most of the documents not selected are photograph and autograph requests. Other routine business correspondence, such as letters of transmittal, have not been selected.