This scrapbook covers the period January-December 1883. The entries are by Edison and relate primarily to electric lighting. Included are notes and drawings concerning lamps, generators, meters, regulators, electric power distribution, and other parts of the system. Many of the entries contain notes by Edison to Richard N. Dyer, his patent attorney. The case number of Edison's patent application has been written on some of the items. Courtesy of Thomas Edison National Historical Park.