After Congress moved elsewhere, Trinity was used as a hospital, and the Dutch church, being constructed of stone, was converted into a prison. Its most famous prisoner was Enoch Crosby (who served as the original for Cooper's hero in _The Spy_), a patriot who twice escaped with the help of the Committee of Safety, the only persons who knew his true character. Across the river Newburgh is visible rising above the Hudson. From the Spring of 1782 to Aug. 1783 Washington made his headquarters in the Jonathan Hasbrouck house* (to the south of the city), built between 1750 and 1770. The house, a one story stone building with a timber roof, has been purchased by the State of N.Y. and is open to visitors. It contains many interesting Revolutionary weapons, documents and other relics. Here in May, 1782, Washington wrote his famous letter of rebuke to Lewis Nicola, who had written in behalf of a coterie of officers suggesting that he assume the title of king. Washington's reply was peremptory and indignant. They could not have found, he said, "a person to whom their schemes were more disagreeable," and charged them, "if you have any regard for yourself or posterity, or respect for me, to banish these thoughts from your mind, and never communicate, as from yourself or any one else, a sentiment of like nature." Here also he made his reply to the so-called Newburgh addresses written by John Armstrong and calling for action on the part of the army to redress its grievances. Newburgh was still his headquarters when Washington by the force of his influence secured the quiet disbandment of the Continental Army at the close of the war. Upon the occasion of the centennial celebration (1883) of this event, a monument called the Tower of Victory, 53 ft. high with a statue of Washington, was erected. Newburgh is the center of a rich agricultural region, but it is a manufacturing center as well; its output comprises machine shop products, plaster, cotton, woolen and silk goods, felt hats, furniture, flour, lumber and cigars. Above Newburgh can be seen the lighthouse (on the west bank) called the Devil's Danskammer, or Devil's Dance Hall, recalling the time when Henry Hudson and his crew landed here to witness an Indian pow-wow. The Dutch, who were considerably startled by the affair, thought that it could be nothing less than a diabolical dance; hence the name. [Illustration: Robert Fulton's First Steamboat (_From Fulton's own Sketch_)