June 26, 1945 Charter signed in San Francisco
March 21, 1946 Headquarters at Hunter College, New York City
August 19, 1946 Headquarters at Lake Success, New York
January 1947 UN Board of Design began the design the NYC UN permanent headquarters
consists of 4 buildings:
the Secretariat building
the General Assembly building
the Conference building
the Dag Hammarskjold Library building
July 1947 Razing of the 18 acre site began (Site donated by John D. Rockefeller Jr)
September 1949 Construction began.
September 1950 Secretariate building completed.
October 24, 1951 UN issues first stamps.
October 24, 1952 7th Anniversary of signing UN Charter (First Day Issue)
New York City permanent headquarters completed.
First Day Cover of UN stamp #12 canceled on October 24, 1952 at the UN permanent
headquarters in NYC and sent westerly first to Melbourne Australia, then to London
England and finally back to the US and its final destination of Stephanville TX
completing its round-the-world trip from the UN in New York City.