In this Thursday, March 7, 2019 file photo, a shadow of Milica Kesler, curator and archivist is cast onto a poster of Nikola Tesla at the Nikola Tesla museum in Belgrade, Serbia. (AP Photo/Darko ...

On January 9, 1943, two days after Nikola Tesla died destitute in a New York City hotel, the FBI called MIT professor and esteemed electrical engineer, John G. Trump, to determine if any of the ...