This letterbook covers the period February-May 1900. Most of the correspondence is by Walter S. Mallory, vice-president of the company, and John F. Randolph, treasurer. The letters deal mainly with personnel matters, the company's financial obligations, equipment, and supplies. Some of the items concern operations and record keeping at the Ogden works. One letter includes Edison's response to criticism of the mill's operation. Some of the material relates to an experimental reheater of compressed air developed in conjunction with the Ingersoll Sergeant Drill Co. Other items pertain to work for the New Jersey Zinc Co. A portion of the company letterhead is affixed to the front cover and is inscribed "Dated from Feb 28 1900 to May 1. 1900." The book contains 999 numbered pages and an index. Approximately 5 percent of the book has been selected. Courtesy of Thomas Edison National Historical Park.