"Making chalk mark on generator $1. Knowing where to make mark $9,999." https://www.smithsonianmag.com/history/charles-proteus-steinmetz-the-wizard-of-schenect

"Making chalk mark on generator $1. Knowing where to make mark $9,999." https://www.smithsonianmag.com/history/charles-proteus-steinmetz-the-wizard-of-schenectady-51912022/ https://www.smithsonianmag.com/history/charles-proteus-stein...