The Macy’s Thanksgiving Day Parade has become as much of an American tradition as turkey and stuffing. Every year since 1924 the streets of New York have been dazzled by floats, marching bands and later, oversized balloons and the Rockettes. These photographs explore the history of what has become one of America’s most beloved parades, now with more than three million New Yorkers watching along the route and an additional 50 million television viewers.