1772: The "Act to Regulate the Practice of Physick & Surgery within the colony of New Jersey," the first doctor licensing commission in the U.S., was put into effect. 1798: George Washington appointed Samuel Osgood of Massachusetts as the first Postmaster General under the Constitution. 1818: Dr. James Blundell preformed the first transfusion using human blood, as opposed to animal blood. 1868: August Möbius, the mathematician who invented the famous single-sided strip that bears his name, died. 1871: A patent was issued to David Saylor for the composition of Portland cement. 1887: Sir Barnes Wallis, inventor of the WWII, 9 kilopound "dambuster" bombs, was born. 1902: Blue jean inventor Levi Strauss died. 1914: The Federal Trade Commission (FTC) was established. 1981: The Boeing 767-200 made its maiden flight in Everett, WA. 1982: Paul Kollsman, inventor of the first accurate barometric altimeter, died. 1984: U.K. and China agreed to Hong Kong handover. 1991: Four men and four women began a 2-year stay inside Biosphere Two, in Oracle, AZ. 1996: Astronaut Shannon Lucid returned to Earth in the shuttle Atlantis after 6 months aboard the Russian Mir space station. 2002: Nils Bohlin, inventor of the 3-point should and lap safety belt, died.