This folder contains documents, primarily correspondence, relating to activities at the Ogden works. Most of the letters are to or from Edison; Walter S. Mallory, vice president; and Owen J. Conley, superintendent. The letters deal mainly with equipment, supplies, and insurance. The subjects addressed include the test of briquettes by the Crane Iron Works at Catasauqua, Pennsylvania; specifications for the construction of bricker furnaces and ovens; the purchase of special steam shovels; the sale of the Brennan crushers; and difficulties in obtaining credit from suppliers. Many of Mallory's letters to Edison are reports on activities at the Ogden works. Other prominent correspondents include Col. John H. Wood, an insurance broker; Alexander Backus, president of the Vulcan Iron Works Co. of Toledo, Ohio; Pilling & Crane of Philadelphia; and stockholder Robert L. Cutting III. Approximately 20 percent of the documents have been selected. Courtesy of Thomas Edison National Historical Park.