This folder contains correspondence and other documents relating to the administrative, financial, and technical operations of the Edison Portland Cement Co. Included are documents pertaining to kiln tests conducted by the superintendent William H. Mason. Other items refer to sales and distribution matters, quarry operations, and licensing arrangements involving Edison’s crushing rolls. Also included are documents regarding the incorporation of the Edison Pulverized Limestone Co., the purchase of Edison's property in Ogden by the New Jersey Zinc Co., the sale of land to the Interstate Park Commission, and the establishment of a fellowship at Rutgers College for investigating sulphate of ammonia and its use as a fertilizer. Letters by company president Walter S. Mallory, former manager of sales Emanuel Meyer, and longtime Edison associate Francis R. Upton discuss management problems involving former employees S. Churchill and J. T. Wakeman. A few documents bear marginalia by Edison.

Less than 10 percent of the documents have been selected. The unselected material consists primarily of meeting announcements, letters of transmittal and acknowledgment, and routine sales and financial statements.

Courtesy of Thomas Edison National Historical Park.