 His major work is a , 12-piece "Zodiac Screen", then the largest sculpture in the world, commissioned by Pan-American Airlines for its terminal at John F. Kennedy International Airport, and now owned and stored by the Port Authority of New York and New Jersey.Hebald was born in New York City.He studied at several New York art schools, starting at the age of ten, including the Art Students League of New York, the National Academy of Design and the Beaux-Arts Institute of Design.