Headshots for their security badges at the Los Alamos Laboratory (Photo: The Atomic Heritage Foundation)

The Feynman Essays

Oppenheimer’s Letter of Recommendation for Richard Feynman (1943)

“He is a second Dirac, only this time human”

It is the beginning of November, 1943. The Manhattan project is in its fourth year of operations, and J. Robert Oppenheimer’s Los Alamos Laboratory is eleven months into its mission of designing and building the first atomic…