The following databases are recommended for searching for information on this topic:
'Cold War' 2021 in Britannica School.
'Cold War' 2006 in Europe since 1914: Encyclopedia of the Age of War and Reconstruction, Charles Scribner's Sons, pp. 620-628, Gale eBooks.
'Origins of the Cold War' 2004 in Cold War Reference Library, Gale, pp1-26, Gale eBooks.
'Winston Churchill delivers the "Iron Curtain" Speech: March 5, 1946' 2014 in Global Events: Milestones Throughout History, Gale, Gale in Context; World History.
'The Marshall Plan rebuilds Europe: 1947-1951' 2014 in Global Events: Milestones Throughout History, Gale, Gale in Context; World History.
'Truman Doctrine' 2016 in America in the World 1776 to Present, Gale, pp 1022-1025, Gale eBooks.
'Berlin blockade' 2004 in Encyclopedia of Russian History, Gale, Gale eBooks.
Cold War Reference Library (6 volumes) by 
The Cold War: Conflict in Europe and Asia by 
Essays in Modern History (1914-1989) : 25 key questions answered by 
Superpower Relations and the Cold War by Churchill's Iron Curtain Speech. Youtube (6 min.).
Reading the Truman doctrine Address - A Primary Source Close Read. Youtube (25 min.).
How the Truman Doctrine Established the Cold War. 2018. Youtube (5 min.).
What Was the Cold War? 2018. Youtube (6 min.).
The Cold War Part 1: 1945-1961. 2007, ClickView. (36 min.).
The Cold War Part 2: 1962-1991. 2007, ClickView. (36 min.).
Cold War: Marshall Plan 1947-1952. 2003. ClickView (47 min.).
