This folder contains correspondence and other documents relating to the technical and commercial development of wireless telegraphy or radio. Among the items for 1907 are letters concerning the finances of the Marconi Wireless Telegraph Co. of America and Edison's assessment of, and investment in, that company.

Approximately 40 percent of the documents have been selected. The items not selected consist of routine correspondence about Marconi company notes, letters of inquiry, and items that duplicate information in selected material.