Secretary of State under Truman, he negotiated the treaty that led to the formation of NATO in 1949
Memorandum from 
William Leahy to Secretary of State Stettinius regarding British .... Letter to 
President Truman from Secretary of War Henry L. Stimson on Soviet views of the 
bomb, ... U.S. Department of State, 1947-49; Assistant Secretary of State, 1949-
53; member... [DOC] [TLE] Timeline NATO - Timelines of History [PAR] 1893 Apr 11, Dean G. Acheson, U.S. secretary of state (1949-53), was born.