Persons
- Anderson, H. Eugenie, Minister to Bulgaria to December 1964
- Balaceanu, Petre, Romanian Minister to the United States to May 1967
- Ball, George W., Under Secretary of State to September 1966; Ambassador to the United Nations, June–September 1968
- Barber, Arthur W., Deputy Assistant Secretary of Defense for Arms Control
- Bashev, Ivan, Bulgarian Foreign Minister
- Bator, Francis M., Member, National Security Council Staff, 1964–1967; President’s Deputy Special Assistant for National Security Affairs, 1965–1967
- Beam, Jacob D., Ambassador to Czechoslovakia from August 1966
- Birladeanu, Alexandru, Romanian Deputy Prime Minister
- Bogdan, Corneliu, Romanian Ambassador to the United States from July 1967
- Bohlen, Charles E., Ambassador to France to February 1968; thereafter Deputy Under Secretary of State for Political Affairs
- Brezhnev, Leonid I., First Secretary of the Communist Party of the Soviet Union from October 1964
- Brzezinski, Zbigniew, Policy Planning Council, Department of State, 1964–1966
- Bundy, McGeorge, President’s Special Assistant for National Security Affairs to February 1966
- Cabot, John M., Ambassador to Poland to September 1965
- Ceausescu, Nicolae, Secretary General of the Romanian Communist Party from March 1965
- Clifford, Clark, Secretary of Defense from March 1968
- Crawford, William A., Minister to Romania to December 1964; thereafter Ambassador to Romania to October 1965
- Creel, Robert C., Director, Office of German Affairs, Bureau of European Affairs, Department of State, to July 1964
- Crnobrjna, Bogdan, Yugoslav Ambassador to the United States
- David, Vaclav, Czechoslovak Foreign Minister
- Davis, Nathaniel, Jr., Member, National Security Council Staff
- Davis, Nathaniel, Sr., Minister to Bulgaria, May 1965–June 1966; thereafter detailed to the White House
- Davis, Richard H., Deputy Assistant Secretary of State for European Affairs, April 1964–December 1965; thereafter Ambassador to Romania
- De Gaulle, Charles, President of France
- Debre, Michel, French Foreign Minister
- Denny, George C., Deputy Director, Bureau of Intelligence and Research, Department of State
- Djilas, Milovan, Yugoslav dissident
- Dobrynin, Anatoli F., Soviet Ambassador to the United States
- Drozniak, Edward, Polish Ambassador to the United States until November 1966
- Dubcek, Alexander, First Secretary of the Czechoslovak Communist Party from January 1968
- Duda, Karl, Czech Ambassador to the United States
- Elbrick, C. Burke, Ambassador to Yugoslavia from March 1964
- Fock, Jeno, Hungarian Deputy Prime Minister
- Fowler, Henry H., Secretary of the Treasury
- Gaston-Marin, Gheorghe, Romanian Deputy Prime Minister
- Georgiev, Ivan-Asen, Bulgarian citizen tried and executed for treason
- Gerasimov, Luben, Bulgarian Ambassador to the United States from December 1966
- Gheorghiu-Dej, Gheorghe, Romanian President and First Secretary of the Romanian Communist Party to March 1965
- Gligorov, Kiro, Bulgarian Deputy Prime Minister
- Goldberg, Arthur J., Ambassador to the United Nations, July 1965–June 1968
- Gomulka, Wladyslaw, First Secretary of the Polish Communist Party
- Grechko, Andrei, Commanding General, Warsaw Pact Forces
- Gronouski, John A., Ambassador to Poland from December 1965
- Gruber, Karl, State Secretary in the Office of the President of Austria
- Hajek, Jiri, Czech Ambassador to the United Nations
- Harriman, W. Averell, Under Secretary of State for Political Affairs to March 1965; thereafter Ambassador at Large
- Harmel, Pierre C., Belgian Foreign Minister
- Hayes, John S., Ambassador to Switzerland from September 1966
- Haymerle, Heinrich, Director for Political Affairs of the Austrian Foreign Ministry
- Helms, Richard, Director of Central Intelligence from June 1966
- Hillenbrand, Martin J., Ambassador to Hungary from October 1967
- Hont, Janos, Hungarian First Deputy Minister of Agriculture
- Horsey, Outerbridge, II, Ambassador to Czechoslovakia until August 1966
- Johnson, Lyndon B., President of the United States
- Jones, Owen T., Charge d’Affaires in Hungary until July 1964
- Kadar, Janos, First Secretary of the Hungarian Communist Party
- Kardelj, Edvard, President of the Yugoslav Federal Assembly
- Katzenbach, Nicholas deB., Under Secretary of State from October 1966
- Kennedy, John F., President of the United States until his death on November 22, 1963
- Klaus, Josef, Chancellor of Austria
- Knappstein, Heinrich, German Ambassador to the United States
- Kohler, Foy D., Ambassador to the Soviet Union to November 1966; Deputy Under Secretary of State for Political Affairs, November 1966–December 1967
- Khrushchev, Nikita S., First Secretary of the Communist Party of the Soviet Union and Chairman of the Council of Ministers of the Soviet Union to October 1964
- Leddy, John M., Assistant Secretary of State for European Affairs from June 1965
- Lemberger, Ernst, Austrian Ambassador to the United States
- Lucet, Charles, French Ambassador to the United States from December 1965
- MacArthur, Douglas, II, Ambassador to Austria from May 1967
- Manescu, Cornelieu, Romanian Foreign Minister
- Mann, Thomas C., Under Secretary of State for Economic Affairs, March 1965–May 1966
- Maurer, Ion, Romanian Prime Minister
- McCone, John A., Director of Central Intelligence until April 1965
- McGhee, George C., Ambassador to Germany to May 1968
- McNamara, Robert S., Secretary of Defense to February 1968
- McSweeney, John M., Minister to Bulgaria, October 1966–April 1967; thereafter Ambassador to Bulgaria
- Michalowski, Jerzy, Polish Ambassador to the United States from September 1967
- Micunovic, Veljko, Yugoslav Ambassador to the United States
- Mindszenty, Cardinal Josef, Roman Catholic Primate of Hungary
- Mod, Peter, Hungarian First Deputy Foreign Minister
- Modrezewski, Franciszek, Polish Deputy Minister of Foreign Trade
- Munkki, Olavi, Finnish Ambassador to the United States
- Nagy, Janos, Hungarian Ambassador to the United States from October 1968
- Nikezic, Marko, Yugoslav Foreign Minister
- Nitze, Paul H., Assistant Secretary of Defense for International Security Affairs
- Novotny, Anton, President of Czechoslovakia to March 1968, First Secretary of the Czech Communist Party to January 1968
- O’Shaughnessey, Liam, Charge d’Affaires in Hungary, November 1964–September 1966
- Owen, Henry D., Chairman of the Policy Planning Council, Department of State, from June 1966
- Peter, Janos, Hungarian Foreign Minister
- Podgorny, Nikolai, President of the Soviet Union from October 1964
- Popov, Lyubomir, Bulgarian Minister to the United States to October 1965
- Popovic, Vlado, Secretary General to President Tito of Yugoslavia
- Radvanyi, Janos, Hungarian Charge d’Affaires in the United States to May 1967
- Rapacki, Adam, Polish Foreign Minister
- Rostow, Eugene V., Under Secretary of State for Political Affairs from October 1966
- Rostow, Walt W., Counselor of the Department of State and Chairman of the Policy Planning Council to March 1966; thereafter President’s Special Assistant
- Ruser, Claus, Acting Staff Director, Senior Interdepartmental Group
- Rusk, Dean, Secretary of State
- Schnittker, John A., Under Secretary of Agriculture
- Schultze, Charles, Director of the Bureau of the Budget
- Seebohm, Hans, German Minister for Transportation
- Smith, R. J., Acting Deputy Director for Intelligence, Central Intelligence Agency
- Sonnenfeldt, Helmut, Bureau of Intelligence and Research, Department of State
- Stewart, Michael, British Secretary of State for Foreign Affairs, January 1965–August 1966, and from March 1968
- Stoessel, Walter J., Jr., Deputy Assistant Secretary of State for European Affairs from September 1965; Ambassador to Poland from August 1968
- Strauss, Franz Josef, Chairman, Christian Social Union, and German Minister of Finance from December 1967
- Szilagyi, Beli, Hungarian Deputy Foreign Minister
- Tims, Richard W., Charge d’Affaires in Hungary, June 1966–October 1967
- Tito, Josip Broz, President of Yugoslavia
- Thompson, Llewellyn E., Ambassador at Large until December 1966; thereafter Ambassador to the Soviet Union
- Toon, Malcolm S., Country Director for the Soviet Union and Acting Assistant Secretary of State for European Affairs from June 1968
- Toncic-Sorinji, Lujo, Austrian Foreign Minister until January 1968
- Tuch, Hans, Deputy Chief of Mission in the Embassy in Bulgaria, July 1965–July 1967
- Ulbricht, Walter, Chairman of the Council of State and First Secretary of the East German Communist Party
- Vedeler, Harold C., Director, Office of Eastern European Affairs, Bureau of European Affairs, Department of State
- Vejvoda, Milos, Member, Czech Mission to the United Nations
- Velebit, Vladimir, Executive Secretary of the Economic Commission for Europe
- Waldheim, Kurt, Austrian Ambassador to the United Nations to January 1968; thereafter Foreign Minister
- Zhivkov, Todor, Bulgarian Prime Minister