This notebook covers the period April 1879-March 1880. The entries are by Edison, Charles Batchelor, Francis Upton, Ludwig Boehm, Francis Jehl, and John W. Lawson. Most of the book consists of drawings of lamps and vacuum pumps. Earlier entries include notes on metal and alloy tests; notes on telephone experiments; and notes and drawings by Edison on generators and conductors. On page 195 is a drawing by Upton, depicting the incandescent lamp as "the phoenix arising from the fires of the past." The book contains 236 numbered pages followed by 4 unnumbered pages.
Blank pages: 178-179, 196-197, 204-221, 224-231.
Missing page numbers: 1-2, 95-96, 121-122, 141-142, 147-152, 155-156, 183-188.
[N030003], Technical Note, Thomas Alva Edison, April 8th, 1879 1879-04-08
[N030023], Technical Note, Charles Batchelor, April 8th, 1879 1879-04-08
[N030027], Technical Note, Charles Batchelor, April 9th, 1879 1879-04-09
[N030035], Technical Note, Thomas Alva Edison, July 5th, 1879 1879-07-05
[N030050] Technical Note, c. 1879 1879-00-00
[N030059] Technical Note, c. 1879 1879-00-00
[N030062] Technical Note, c. 1880 1880-00-00
[N030138] Technical Note, c. 1880 1880-00-00
[N030173], Technical Note, Francis Robbins Upton, February 25th, 1880 1880-02-25
[N030174], Technical Note, Francis Jehl, Francis Robbins Upton, February 26th, 1880 1880-02-26
[N030181], Technical Note, John W Lawson, Francis Robbins Upton, March 2nd, 1880 1880-03-02
[N030189], Technical Note, Francis Jehl, John W Lawson, March 5th, 1880 1880-03-05
[N030236] Technical Note, c. 1880 1880-00-00