Today is the birthday of Alexander Calder an American Sculptor famous for inventing the mobile sculpture ( a kinetic sculpture constructed for the principle of equilibrium) born in Pennsylvania on July 22, 1898. He died on November 11, 1976 after a major show at New York called Salute to Mexico.
In celebration of Alexander Birthday, Google created a very interactive Doodle dedicated to Calder.
Below is the replica Logo Collection of Google Doodle.
Read more about Alexander Calder at Wikipedia.org (http://en.wikipedia.org/wiki/Alexander_Calder)