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 Franklin D. Roosevelt Memo on Non-Terrestrial Science and Technology, 22 Feb. 1944<br>
 https://majesticdocuments.com/pdf/fdr_22feb44.pdf
 
-George C. Marshall to Franklin D. Roosevelt, 5 March 1942<br>
-https://majesticdocuments.com/pdf/marshall-fdr-march1942.pdf