After the termination of long litigation over the Jumel estate, Earle was able to purchase the historic "Jumel Mansion", famous as the place where George Washington made his headquarters during the Battle of Harlem Heights, in September, 1776. It is also where Alexander Hamilton and Aaron Burr met before their fatal duel. Here in this house, at 160th street, near 10th Avenue, New York City, built by a relative of Earle's ancestor, Capt. William Morris, he spent his retirement the last years of his life. He had this building fitted up and restored as far as possible to its original condition and gave it the name of "Earle Cliff." Here, his wife, a Regent of the Washington Heights Chapter, Daughters of the American Revolution, entertained the Daughters and other patriotic societies. She was the founder and president of the Washington Heights Society, Children of the American Revolution.