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postage
1954, May 10
ILO issue unwmk (no perf info)
![Colnect-685-523-ILO-UN-International-Labor-Organization.jpg](files/thumbs/na/100px-Colnect-685-523-ILO-UN-International-Labor-Organization.jpg)
1955, May 11
UNESCO issue
![ARC-un02.jpg-crop-201x136at468-753.jpg](files/thumbs/20/100px-ARC-un02.jpg-crop-201x136at468-753.jpg)
1959, May 18
UN Economic Commission for Europe issue
![Colnect-686-627-Symbols-of-Work.jpg](files/thumbs/sy/100px-Colnect-686-627-Symbols-of-Work.jpg)
1962, May 25
1962 issue
![Colnect-675-297-To-live-together-.jpg](files/thumbs/oz/100px-Colnect-675-297-To-live-together-.jpg)
![Colnect-675-299-UN-Flag.jpg](files/thumbs/29/100px-Colnect-675-299-UN-Flag.jpg)
![Colnect-675-300-UN-in-Hands.jpg](files/thumbs/0z/100px-Colnect-675-300-UN-in-Hands.jpg)
1965, May 17
ITU 100th issue
![Colnect-4518-237-Telstar-Communications-Satellite.jpg](files/thumbs/co/100px-Colnect-4518-237-Telstar-Communications-Satellite.jpg)
1966, May 26
World Health Organization issue
![Colnect-784-194-WHO-Headquarters-Geneva.jpg](files/thumbs/he/100px-Colnect-784-194-WHO-Headquarters-Geneva.jpg)
1968, May 31
1970, May 22
![Colnect-692-036-Fight-Cancer.jpg](files/thumbs/zf/100px-Colnect-692-036-Fight-Cancer.jpg)
1971, May 28
Opening of New U.P.U. Headquarters Building issue
1973, May 25
U.N. Volunteers Program issue
![Colnect-2021-047-5%C5%9F-Anniversary-of-the-UN-Volunteer-Program.jpg](files/thumbs/yz/100px-Colnect-2021-047-5%C5%9F-Anniversary-of-the-UN-Volunteer-Program.jpg)
1974, May 6
Brazilian Peace Mural, Delegates' Lobby
![Colnect-1983-239-Peace-Mural-by-Candido-Portinari.jpg](files/thumbs/ra/100px-Colnect-1983-239-Peace-Mural-by-Candido-Portinari.jpg)
1975, May 9
International Women's Year issue
![Colnect-1766-968-Equality-Between-Men-and-Women.jpg](files/thumbs/yz/100px-Colnect-1766-968-Equality-Between-Men-and-Women.jpg)
1976, May 28
U.N. Conference on Human Settlements issue
![Colnect-806-476-Houses-round-the-World.jpg](files/thumbs/es/100px-Colnect-806-476-Houses-round-the-World.jpg)
1978, May 5
Namibia 1978 issue
![Colnect-784-226-Namibia.jpg](files/thumbs/22/100px-Colnect-784-226-Namibia.jpg)
1979, May 4
International Year of the Child issue
![Colnect-784-232-Child-s-Drawing.jpg](files/thumbs/ch/100px-Colnect-784-232-Child-s-Drawing.jpg)
1980, May 16
peacekeeping operations issue
![Colnect-3684-476-Peacekeepers-with-the-UN-emblem.jpg](files/thumbs/pe/100px-Colnect-3684-476-Peacekeepers-with-the-UN-emblem.jpg)
1981, May 29
New and Renewable Sources of Energy issue
![Colnect-1429-655-New-and-renewelable-sources-of--eacute-nergy.jpg](files/thumbs/la/100px-Colnect-1429-655-New-and-renewelable-sources-of--eacute-nergy.jpg)
1984, May 29
Future for Refugees issue
![Colnect-1046-827-Refugees.jpg](files/thumbs/82/100px-Colnect-1046-827-Refugees.jpg)
1985, May 10
1985 issue
![Colnect-1043-620-Definitives.jpg](files/thumbs/0z/100px-Colnect-1043-620-Definitives.jpg)
1986, May 22
Philately - The International Hobby issue
![Colnect-2021-409-Philately.jpg](files/thumbs/09/100px-Colnect-2021-409-Philately.jpg)
1988, May 6
International Volunteer Day 1988 issue
![Colnect-2021-923-International-Volunteer-Day.jpg](files/thumbs/at/100px-Colnect-2021-923-International-Volunteer-Day.jpg)
1990, May 4
Medicinal Plants (1990 United Nations)
![Colnect-2021-942-Medicinal-Plants.jpg](files/thumbs/me/100px-Colnect-2021-942-Medicinal-Plants.jpg)
1991, May 10
1991, May 10
1st Anniversary of Namibian Independence issue
![Colnect-2021-947-Namibian-Independence.jpg](files/thumbs/ib/100px-Colnect-2021-947-Namibian-Independence.jpg)
1992, May 22
2nd U.N. Conference on Environment and Development issue
![Colnect-1982-981-Earth-Summit.jpg](files/thumbs/1z/100px-Colnect-1982-981-Earth-Summit.jpg)
![Colnect-1982-982-Earth-Summit.jpg](files/thumbs/2z/100px-Colnect-1982-982-Earth-Summit.jpg)
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