Opening of Ivy Lea Bridge by Mackenzie King and Franklin Delano Roosevelt: HAS of official car bearing Franklin Delano Roosevelt, William Lyon Mackenzie King and other man moving past camera. Lengthy excerpts of speeches by Mackenzie King and Roosevelt extolling friendly relations between Canada and United States. Two-shot of Roosevelt and Prime Minister Mackenzie King in convertible, cutting ribbon of Ivy Lea Bridge, laughing. Three shots of motorcade, secret service men following official car, Royal Canadian Mounted Police, crowd. Two-shot of boy and girl standing at boundary line, holding flags of respective countries, shaking hands. CU of handshake by two men, boundary line marker in background. Various shots, from different angles and distances of Ivy Lea Bridge.