OFFICE FOR EMERGENCY MANAGEMENT
OFFICE OF SCIENTIFIC RESEARCH AND DEVELOPMENT
1530 P STREET NW.
March 9, 1942
The White House,
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.
22nd May 1944
The Rt. Hon. Winston S. Churchill, C.H., M.P.
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.
Old Grove Rd.
Peconic, Long Island
August 2nd, 1939
President of the United States,