This folder contains correspondence and other documents relating to the technical and commercial development of wireless telegraphy or radio. The items for 1911 consist primarily of unsolicited correspondence, along with routine correspondence regarding the Marconi Wireless Co. and the renewal of notes held by Edison. Several of the letters contain brief marginal comments by Edison indicating his willingness to extend the notes. Also included is unsolicited correspondence requesting Edison's advice and assistance on technical matters or seeking his assistance in improving or promoting inventions. Courtesy of Thomas Edison National Historical Park.