This primary source comes from the Records of the U.S. Information Agency.
National Archives Identifier:
47362Full Citation: Motion Picture 306.595; President Kennedy Speaks about Soviet Threats to Berlin; 7/25/1961; Moving Images Relating to U.S. Domestic and International Activities , 1982 - 1999; Records of the U.S. Information Agency, Record Group 306; National Archives at College Park, College Park, MD. [Online Version, https://docsteach.org/documents/document/jfk-soviet-threat-berlin, May 3, 2024]