Thanks for the links ML/NJ. Unfortunately my computer couldn't load and play them for some unknown reason.
I posted a link to the video and sound clip where Churchill says:
"...It is my duty to place before you certain facts about the present position in Europe. From Stettin in the Baltic to Trieste in the Adriatic an iron curtain has descended across the Continent. Behind that line lie all the capitals of the ancient states of Central and Eastern Europe. Warsaw, Berlin, Prague, Vienna, Budapest, Belgrade, Bucharest and Sofia..."
Churchill making "iron curtain" comment in speech:
Link to short video clip posted here.
Once you get to the site, click on the photo of Churchill at the podium.