With Nutcrackers, Rockettes and Viennese waltzers, Thanksgiving to New Year's is the solitary time of the year when the general public shows an interest in dance.  Before the holiday rush there were two dance celebrations - one marking an anniversary and the other a look into the beginnings of extraordinary career - with varying success.   Balanchine: The City Center Years Starting on Halloween and ending on November 4, 2018, New York City Center jointly commemorated their 75th Anniversary and the prolific 15 years (1948-1963) George Balanchine and New York City Ballet were there.  In 1943, Mayor Fiorello La Guardia created the New