Graduate of the class of 1935 of James Madison High School that has been called the '' greatest graduating high school class '' in New York City history , graduate of Hunter College , graduate of NYU Law School , life-time associate and partner at Seligman & Seligman law firm -LRB- practicing until the day of her death -RRB- , esteemed member of the New York City Bar , the American Bar Association , and one of the first women admitted to plead before the U.S. Supreme Court .