This folder contains correspondence and other documents relating to the technical development of films, cameras, and projectors. Included are items pertaining to the experimental work on color photography contracted to Charles L. Brasseur; other experimental work conducted at the West Orange laboratory by Willard C. Greene; and the development of the "Household Projecting Kinetoscope," a small projector for home use. There are also assessments of improvements submitted to the Edison Manufacturing Co. by outsiders, including evaluations of the color photographic process developed by Florence Warner and John H. Powrie. Among the correspondents are Frank L. Dyer, vice president of the Edison Manufacturing Co.; George F. Scull, assistant to the vice president; and Horace G. Plimpton, manager of negative production in the Kinetograph Department.

Approximately 50 percent of the documents have been selected. The items not selected include correspondence regarding improvements that the company declined to pursue, as well as items that duplicate information in selected material.