Primary Source

Primary Source

Bush-FDR Letter

OFFICE FOR EMERGENCY MANAGEMENT
OFFICE OF SCIENTIFIC RESEARCH AND DEVELOPMENT
1530 P STREET NW.
WASHINGTON, D.C.

Vannevar Bush
Director
March 9, 1942

The President,
The White House,
Washington, D.C.

Dear Mr. President:

On October 9, 1941, Mr. [Henry] Wallace and I presented to you the status of research in this country and Great Britain on a possible powerful explosive.

In accordance with your instructions, I have since expedited this work in every way possible. I now attach a brief summary report of the status of the matter.

Bohr Letter to Churchill

22nd May 1944 

The Rt. Hon. Winston S. Churchill, C.H., M.P.

Sir,

In accordance with your kind permission, I have the honour to send you a brief report about my impressions of the great Anglo-American enterprise, in the scientific aspects of which I have been given the opportunity to participate together with my British colleagues.

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