I was able to revisit the United Nations Headquarters in New York last Monday, this time with a lawyer friend. At this very same month last year, I visited the U.N. and dropped by their post office at the end of the tour to send U.N. postcards to friends. The U.N. Post Office in New York is located at the lower level where the souvenir shop and bookstore can also be found. Everything from mugs to fridge magnets to plush toys from UNICEF can be purchased there.
I didn't send anything that day, though.