This letterbook covers the period August-October 1894. Most of the correspondence is by Edison and Walter S. Mallory, vice-president of the company. The letters deal mainly with the sale of by-products such as sand and ore dust, with personnel matters, and equipment and supplies. There are also letters dealing with Edison's health and an inquiry regarding the cost of installing a furnace at Glenmont. Some letters concern the marketing of molybdenite and the expected reopening of the Ogden works. Among the selected items is an example of the sales descriptions sent to prospective buyers of sand. There is also an example of the inquiries made during a search for a chief steam engineer. The front cover is stamped "Copying Book" and is marked "Aug 20th - 1894 to Oct 17 -1894." The spine is labeled "#5 Aug 20 1894 to Oct 17 1894." The book contains 494 numbered pages and an index. Less then 10 percent of the book has been selected.