This folder contains correspondence and other documents covering the period 1908-1911, with two additional items from 1901 and 1915. Many of the letters are by Frank L. Dyer of Edison Manufacturing Co. and inventor Thomas Armat. Other correspondents include Dyer Smith of the Legal Department and E. Quincy Smith and Charles M. Campbell, stockholders in the Armat Motion Picture Co. The documents relate primarily to the acquisition of patents held by the Armat Co. Some of the letters deal with waterproof coating for motion pictures. Others concern possible camera infringements. There are also a few items pertaining to author and minister, Edward Everett Hale.

Approximately 50 percent of the documents have been selected. The unselected material includes a pamphlet entitled "Armat Motion Picture Company" (1901). This document was reproduced in Thomas A. Edison Papers Microfilm Edition: Motion Picture Catalogs by American Producers and Distributors, 1894-1908.