This notebook covers the period December 1895-Nebruary 1897. It is the first of a set of four books used by an unidentified experimenter to record lamp tests, nos. 1-302. This book contains tests, nos. 1-148. Each test lists the amperes, volts, and candlepower used. Most of the lamps tested are designated as \"Edison\"" lamps, although there a few from competitors, including \""Buckeye,\"" \""Columbia,\"" and \""Sunbeam.\"" There is scattered marginalia by either Edison or Thomas A. Edison, Jr. The front cover is marked \""Orders. Book No 1. 1 to 148.\"" The pages are unnumbered. Approximately 150 pages have been used. Numerous items have been pasted into the book."