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[[Image:Dictaphone-edison.jpg|thumb|270px]]

[[Image:Dictaphone-edison.jpg|thumb|270px]]

===Team members===

===Team members===

Key members of Edison's team included Charles Batchelor, who supervised the construction of a highly visible exhibit at the Paris Exposition as well as several commercial installations on the Continent. Francis Upton, a university trained mathematician, managed the lamp production factory, where continuous improvement was required, first in Menlo Park and then the larger operation in Harrison, New Jersey. Francis Jehl, who began as a young lab assistant, first worked on the development of the electric meter and then oversaw the installation of Edison’s lighting system in Brunn, Austria, and started a lamp factory in the same town, all by the age of twenty-three. [[Samuel Insull]] was just twenty when he joined Edison in 1881 as private secretary and within the two years became Edison’s personal financial manager, a trusted advisor, and an officer of various Edison companies.

Key members of Edison's team included Charles Batchelor, who supervised the construction of a highly visible exhibit at the Paris Exposition as well as several commercial installations on the Continent. Francis Upton, a university trained mathematician, managed the lamp production factory, where continuous improvement was required, first in Menlo Park and then the larger operation in Harrison, New Jersey. Francis Jehl, who began as a young lab assistant, first worked on the development of the electric meter and then oversaw the installation of Edison's lighting system in Brunn, Austria, and started a lamp factory in the same town, all by the age of twenty-three. [[Samuel Insull]] was just twenty when he joined Edison in 1881 as private secretary and within the two years became Edison's personal financial manager, a trusted advisor, and an officer of various Edison companies.

[[Image:Edison1925.jpg|thumb|320px|left]]

[[Image:Edison1925.jpg|thumb|320px|left]]