This letterbook covers the period December 1891-April 1892. Most of the correspondence is by Thomas Butler, secretary of the company; William S. Perry, treasurer; John P. Walsh, sales agent for sand; and Edwin I. Olmsted, clerk. The letters deal mainly with stock transactions, equipment, supplies, and sand orders. Many of the documents relate to operating problems at the Ogden works, company finances, and ore marketing strategies. Some items pertain to the market price of General Electric securities. The spine is stamped "Letters" and is marked "C 3." The book contains 1001 numbered pages and an index. Less than 5 percent of the book has been selected. Courtesy of Thomas Edison National Historical Park.