AL HIRSCHFELD was known for hiding his daughter’s name, NINA, in each of his pieces [sometimes more than once]. This tradition began in 1945. After about a month, Mr. HIRSCHFELD briefly stopped putting in the NINAs, but fans quickly complained and the NINAs were back to stay [along with a number indicating how many NINAs were hidden in each piece!].
Our thoughts and prayers go out to AL HIRSCHFELD‘s family and friends. [Thanks to John Beatty for the heads-up.]