It's still dark, just after six in the morning, when Alex Baranpuria, dressed sharply in a red shirt, matching red tie, and black slacks, packs up a bagel with tofu, grabs the A train from Fulton Street in New York's downtown Financial District, and heads up to 125th Street. From there it's a quick subway transfer to 135th Street and St. Nicholas Avenue in Harlem. Just across the street from the subway stop is St. Nicholas Park; St. Nicholas, the patron saint of Dutch New Amsterdam, is also the patron saint of children.