While researching a topic, a student has taken the following notes:
- Thomas Edison is regarded as one of the most important inventors in US history.
- Having received little formal schooling, Edison relied on specialist employees at his various laboratories and offices to complete the technical work for many of his inventions.
- Francis Robbins Upton was a mathematician and physicist who worked at the Menlo Park laboratory.
- He is best known for inventing the electric fire alarm.
- John Kruesi was a machinist who worked at Edison Machine Works.
- He is best known for leading the installation of underground electricity distribution cables for the Edison Electric Tube Company.