Tour of Greenfield Village before Light's Golden Jubilee, October 21, 1929

The Menlo Park complex was an all-male environment; the closest workaday involvement of women -- not forgetting that Edison and several of his personnel were married -- was at the Sarah Jordan boardinghouse. Offering room and board for unmarried employees at the complex, it was operated by Sarah Jordan, a distant relative of Edison's. The house also played host to the experimental lighting system installed throughout Menlo Park in December 1879.

The presence of a machine shop (and of foreman / head machinist John Kruesi) was fundamental to the success of Menlo Park. This well-equipped facility -- built to replace the small machine shop originally installed in the laboratory -- enabled Edison and his associates to not only rapidly prototype iterations of experimental devices but also facilitate their eventual, profitable manufacture.

This building was built in late 1878 as Edison's work on electric lighting expanded. The first floor provided office space for accounting, bookkeeping, and patent applications; upstairs was a superbly stocked technical library. The building also played another key role: as a reception area for journalists and other visitors it provided a disarming first impression of Edison's success and ambition.