Of Pennsylvania; when but twenty years of age, made a reflecting telescope, of eight inches focal distance on the Newtonian system, which, as far as we know, was the first telescope made in America. In 1769, he executed his Planetarium, a piece of mechanism which reflected great honor on the inventor. On the decease of Doctor Franklin, he was elected President of the Philosophical Society at Philadelphia; appointed director of the mint of the United States in 1792; and resigned 1795. [P. 13.]
An Historical Catalogue of Peales' Collection of Paintings. "The proper study of mankind, is man." Philadelphia: Printed by Richard Folwell, No. 33, Mulberry-Street, M,DCC,XCV.