This primary source comes from the Records of the U.S. Information Agency.
National Archives Identifier:
542069Full Citation: Civil Rights March on Washington, D.C. [Dr. Martin Luther King, Jr. speaking.]; 8/28/1963; Records of the U.S. Information Agency, Record Group 306. [Online Version, https://www.docsteach.org/documents/document/1-civil-rights-march-on-washington-dc-[dr-martin-luther-king-jr-speaking], December 7, 2019]