This notebook covers the period March 1879-May 1880. The entries are by John W. Lawson and include notes on metal alloys made and tested and notes on experiments with pyrites. The label on the front cover is marked "Alloys and Ores." The book contains 288 numbered pages.
Blank pages: 28-47, 70-73, 78-99, 112-139, 142-163, 166-175, 178-179, 182-275. Courtesy of Thomas Edison National Historical Park.