In November 1986, after five years of research, Judge wrote and published "Columbus's First Landfall in the New World," which advocated Samana Cay in the Bahamas as the true location of Guanahani, the first island seen by Christopher Columbus on his first voyage to America.
Luis Marden's identification of Samana Key as Guanahani is the strongest contender with the former Watling Island theory.