[X001G1B-F] Thomas Alva Edison Notes, Drawings and Sketchbooks -- Menlo Park Notebook #36 (1879)
This notebook contains one page of unsigned entries, probably by Charles Batchelor, covering the period January-March 1879. They concern a reduction in coal usage in the laboratory due to efficiency improvements. The label on the front cover is inscribed "Tests April '80," with the words "Engine & Boiler" struck out.
Henry Ford Museum and Greenfield Village Research Center, Dearborn, Mich.