This letterbook covers the period July-September 1897. Most of the correspondence is by Walter S. Mallory, vice-president of the company. The letters deal mainly with personnel matters, supplies, and equipment. Many of the letters relate to the purchase and operation of the shovel manufactured by the Toledo Foundry & Machine Co. and the sale of used crushers to the Desloge Consolidated Lead Co. of Missouri. The spine is labeled "July 31st, 1897 to Sept. 23rd, 1897." The book contains 503 numbered pages and an index. Less than 10 percent of the book has been selected.

Courtesy of Thomas Edison National Historical Park.