Item 1 - Copy of letter from Niels Bohr to Marcus Oliphant

1 folded sheet

Photomechanical copy of Niels Bohr’s 3 June 1939 letter to Oliphant, proposing that Frisch make a short stay at his laboratory. He also states that he believes that using uranium to make a bomb would involve a tremendous task indeed, but suggests that using uranium as a moderate source of heat or as a neutron source.