- Thomas Radzuweit, Bonn - The development of United Nations - League of Nations and UN
- Fran Adams - San Diego Exhibiting Workshop
- Larry Fillion - The World United Against Malaria Stamps, Malaria Philatelists International
- Greg Galletti - World Forum Philatelist
- Henry Gitner - Henry Gitner Philatelists, Inc
- Fred Schmitt - Schmitt Investors Ltd.
- John Terins - TERINS
- Maxim Van Ooijen - UNOstamps
- Thomas Radzuweit - Persecution - Resistance - Holocaust
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United Nations
United Nations System of Organizations
International Days
UN Conferences and Events
2006 - International Year of Deserts and Desertification (IYDD)
2008 - International Year of the Potato (IYP 2008)
2008 - International Year of Planet Earth (IYPE) - Food and Agriculture Organization (FAO)
- International Atomic Energy Agency (IAEA)
- International Civil Aviation Organization (ICAO)
- International Fund for Agricultural Development (IFAD)
- International Labour Organization (ILO)
- International Maritime Organization (IMO)
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International Telecommunications Union (ITU)
World Summit on the Information Society (WSIS)
Telecom World 2006 (TELECOM06)
Telecom World 2009 (TELECOM09) -
United Nations Development Programme (UNDP)
Millennium Development Goals (MDG) -
UNESCO
World Heritage List (WCH) - UNICEF
- United Nations Industrial Development Organization (UNIDO)
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Universal Postal Union (UPU)
24th Universal Postal Congress 2008 (UPC) - World Food Programme (WFP)
- World Health Organization (WHO)
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World Meteorological Organization (WMO)
World Climate Conference-3 2009 (WCC-3) -
World Tourism Organization (UNWTO)
2nd International Conference on Climate Change and Tourism 2007
