This notebook covers the period December 1878-January 1879. It contains experiments by Edison's nephew, Charles P. Edison, on the electromotograph telephone. The label on the front cover is marked "New Receiver." The book contains 285 numbered pages.

Blank pages: 6-7, 10-11, 20-21, 24-25, 28-29, 32-33, 36-37, 42-43, 232-233, 250-275, 280-281.

Courtesy of Thomas Edison National Historical Park.