Roberts, Eugene L. "Civil Rights Era Editors", American Society of Newspaper Editors "ASNE - Civl Rights Era Editors". Archived from the original on 2006-06-03. Retrieved 2006-06-23. – URL retrieved June 25, 2006
U.S. Department of State: Foreign Relations, 1964–1968, Volume V, Vietnam 1967, Marigold, Sunflower, and the Continuing Search for Peace, January–February, Document 20. Editorial Note[1] – URL retrieved June 25, 2006
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Roberts, Eugene L. "Civil Rights Era Editors", American Society of Newspaper Editors "ASNE - Civl Rights Era Editors". Archived from the original on 2006-06-03. Retrieved 2006-06-23. – URL retrieved June 25, 2006