List of Principal Persons
- Ahlgren, G., Swedish Counselor of Legation and Chargé d’Affaires in Turkey.
- Albert, King of the Belgians.
- Ali-Kuli Khan, Mirza, Persian Counselor of Legation at Washington; Chargé d’Affaires from April 25.
- Bailly-Blanchard, Arthur, United States Minister to Haiti.
- Baker, Newton D., Secretary of War of the United States.
- Bakhmeteff, Boris A., Russian Ambassador at Washington.
- Balfour, Arthur James, British Secretary of State for Foreign Affairs.
- Barclay, Colville, British Counselor of Embassy at Washington; Chargé d’Affaires from July 30.
- Barton, James L., Chairman of the American Committee for Armenian and Syrian Relief.
- Belden, Perry, United States Secretary of Legation in Colombia; Chargé d’Affaires.
- Belt, John W., United States Secretary of Legation in Honduras; Chargé d’Affaires, January 18 to February 9.
- Bertrand, Francisco, President of Honduras.
- Brun, Constantin, Danish Minister at Washington.
- Burleson, Albert S., Postmaster General of the United States.
- Caldwell, John L., United States Minister to Persia.
- Calonder, Felix L., President of the Swiss Confederation.
- Chamorro, Gen. Emiliano, President of Nicaragua.
- Clemenceau, Georges, French Premier and Minister of War.
- Crawford, Sir Richard, Commercial Adviser of the British Embassy at Washington.
- Crosby, Oscar T., Assistant Secretary of the Treasury of the United States; President of the Inter-Allied Council on War Purchases and Finance.
- Curtis, Charles B., United States Secretary of Legation in Honduras; Chargé d’Affaires, February 9 to October 1.
- Da Gama, Domicio, Brazilian Ambassador at Washington.
- Daniels, Josephus, Secretary of the Navy of the United States.
- Davis, John W., Solicitor General of the United States to November 21; member of the American Commission to the American–German Prisoners of War Conference at Berne, September 24–November 11; United States Ambassador to Great Britain from November 21.
- Davis, Norman H., United States Treasury representative at London and Paris.
- Davison, Henry P., Chairman of the War Council of the American Red Cross.
- De Broqueville, Baron Charles, Belgian Prime Minister and Minister of Food Supplies.
- De Cartier de Marchienne, E., Belgian Minister at Washington; Appointed Ambassador from September 13, 1919.
- De Chambrun, Charles, French Counselor of Embassy at Washington; Chargé d’Affaires, December, 1918, to June, 1919.
- De Ipanema Moreira, Alberto, Brazilian Counselor of Embassy at Washington; Chargé d’Affaires from October 20.
- Dinichert, Paul, Chief of the Division of Foreign Interests and Internment of the Swiss Political Department; presiding officer at the American-German Prisoners of War Conference at Berne, September 24–November 11.
- Djbmal Pasha, Turkish Minister of Marine.
- Dodge, H. Percival, Special Agent to Serbia (at Corfu) of the Department of State of the United States.
- Dresel, Ellis L., United States War Trade Board representative at Berne; an Assistant American Commissioner at the American–German Prisoners of War Conference at Berne, September 24–November 11.
- Ekengren, W. A. F., Swedish Minister at Washington.
- Elizalde, Rafael H., Ecuadoran Minister at Washington.
- Elkus, Abram I., United States Ambassador to Turkey from July 21, 1916.
- Estrada Cabrera, Manuel, President of Guatemala.
- Ewing, John, United States Minister to Honduras.
- Foster, John G., United States Consul General at Ottawa.
- Francis, David R., United States Ambassador to Russia.
- Freyre y Santander, Manuel de, Peruvian Minister at Washington.
- Garrett, John W., United States Minister to the Netherlands (accredited also to Luxemburg); Chairman of the American Commission to the American–German Prisoners of War Conference at Berne, September 24–November 11.
- Gary, Hampson, United States Agent and Consul General at Cairo.
- Gerard, James W., United States Ambassador to Germany, July 28, 1913, to May 15, 1917.
- Goding, Frederic W., United States Consul General at Guayaquil.
- Gonzales, William E., United States Minister to Cuba.
- Gottschalk, Alfred L. M., United States Consul General at Rio de Janeiro.
- Grant-Smith, Ulysses, United States Counselor of Legation in Denmark; Chargé d’Affaires.
- Gregory, Thomas W., Attorney General of the United States.
- Grew, Joseph C., United States Counselor of Embassy in Austria-Hungary, February 19 to May 23, 1917; Chargé d’Affaires, April 7 to April 14, 1917; assigned to duty in the Department of State of the United States May 23, 1917; Acting Chief of the Division of Western European Affairs of the Department of State from March 14, 1918.
- Harte, A. C., International Secretary of the Young Men’s Christian Association.
- Hertling, Count Georg F. von, German Imperial Chancellor to September 30.
- Hohenlohe Langenburg, Prince zu, German Military Inspector of Volunteer Nursing; Chairman of the German Commission to the American-German Prisoners of War Conference at Berne, September 24–November 11.
- Hoover, Herbert C., Chairman of the Commission for Relief in Belgium; United States Food Administrator.
- Horton, George, United States Consul General at Saloniki.
- House, Edward M., Special Representative of the United States at the Inter-Allied Conference at Paris, November 29–December 3, 1917.
- Hübscher, Carl P., Swiss Secretary of Legation at Washington; Chargé d’Affaires, July 23 to August 27, 1917, and June to September, 1918.
- Hymans, Paul, Belgian Minister of Foreign Affairs.
- Ignatius, Kaarlo, Finnish Commissioner on Special Mission at Washington.
- Jefferson, Benjamin L., United States Minister to Nicaragua.
- Johnson, Stewart, United States Secretary of Legation in Costa Rica; Chargé d’Affaires.
- Jusserand, Jules J., French Ambassador at Washington.
- Lansing, Robert, Secretary of State of the United States.
- Laughlin, Irwin B., United States Counselor of Embassy in Great Britain; Chargé d’Affaires, May 18 to July 17, and October 3 to December 17.
- Leavell, William H., United States Minister to Guatemala.
- Lefevre, Ernesto T., Panaman Minister of Foreign Affairs.
- Leffingwell, Russell C., Assistant Secretary of the Treasury of the United States.
- Lindsay, Ronald C., British Counselor of Embassy at Washington from June 11, 1919; Chargé d’Affaires June 11 to October 1, 1919.
- Long, Boaz W., United States Minister to Salvador, July 29, 1914, to December 30, 1917.
- Macchi di Cellere, Count Vincenzo, Italian Ambassador at Washington.
- MacMurray, John V. A., United States Chargé d’Affaires in China, July 1 to October 11.
- McAdoo, William Gibbs, Secretary of the Treasury of the United States.
- McCormick, Vance C., Chairman of the United States War Trade Board.
- Méndez, Joaquín, Guatemalan Minister at Washington.
- Michaïlovitch, Lioubomir, Serbian Minister at Washington.
- Morgan, Edwin V., United States Ambassador to Brazil.
- Morris, Ira N., United States Minister to Sweden.
- Moshaver-ol-Mamalek, Persian Minister of Foreign Affairs.
- Murphy, Dominic I., United States Consul General at Sofia.
- Naón, Rómulo S., Argentine Ambassador at Washington.
- Oederlin, Frederick, Commercial Adviser of the Swiss Legation at Washington; Chargé d’Affaires, September to November.
- Paderewski, Ignace Jan, representative in the United States of the Polish National Committee at Paris.
- Page, Thomas Nelson, United States Ambassador to Italy.
- Page, Walter Hines, United States Ambassador to Great Britain to November 21.
- Palmer, A. Mitchell, Alien Property Custodian of the United States.
- Pashitch, Nikola P., Serbian President of the Council and Minister of Foreign Affairs.
- Peçanha, Nilo, Brazilian Minister of Foreign Affairs.
- Penfield, Frederic C., United States Ambassador to Austria-Hungary from July 28, 1913.
- Pershing, Gen. John J., Commander in Chief of the American Expeditionary Forces in Europe.
- Phillips, William, Assistant Secretary of State of the United States.
- Pichon, Stephen, French Minister of Foreign Affairs.
- Poland, William B., Director for Europe of the Commission for Relief in Belgium.
- Polk, Frank Lyon, Counselor for the Department of State of the United States.
- Price, William J., United States Minister to Panama.
- Quintana, Federico M., Argentine Counselor of Embassy at Washington; Chargé d’Affaires, January 16 to July 10, 1918, and November 20, 1918, to March 3, 1919.
- Reading, Earl of (Rufus Daniel Isaacs), British High Commissioner and Ambassador on Special Mission at Washington from February 13.
- Reinsch, Paul S., United States Minister to China.
- Riaño y Gayangos, Juan, Spanish Ambassador at Washington.
- Ritter, Paul, Swiss Minister at Washington, June 11, 1909, to July 23, 1917.
- Roussos, Georges, Greek Minister at Washington.
- Sammons, Thomas, United States Consul General at Shanghai.
- Scavenius, Erik, Danish Minister of Foreign Affairs.
- Sharp, William G., United States Ambassador to France.
- Sims, Admiral William S., Commanding United States Naval Operations in European Waters.
- Solf, Wilhelm, German Secretary of State of the Colonial Office in the Cabinet of Count von Hertling, and of the Foreign Office in the Cabinet of Prince Max of Baden.
- Sonnino, Baron Sidney, Italian Minister of Foreign Affairs.
- Spring Rice, Sir Cecil Arthur, British Ambassador at Washington to February 13.
- Stimson, Frederic J., United States Ambassador to Argentina.
- Stovall, Pleasant A., United States Minister to Switzerland.
- Sulzer, Hans, Swiss Minister at Washington from August 27, 1917.
- Symon, Charles, Belgian Counselor of Legation at Washington; Chargé d’Affaires, March 7 to September 11, 1919.
- Vásquez, Mariano, Honduran Minister of Foreign Affairs.
- Wadsworth, Eliot, Vice Chairman of the Central Committee of the American Red Cross.
- Whitlock, Brand, United States Minister to Belgium.
- Willard, Joseph E., United States Ambassador to Spain.
- Wilson, Hugh R., United States Secretary of Legation in Switzerland; Chargé d’Affaires to March 4.
- Wilson, William B., Secretary of Labor of the United States.
- Wilson, Woodrow, President of the United States.
- Zimmermann, Artur, German Secretary of State for Foreign Affairs, November 21, 1916, to August 4, 1917.