Design for a Decorated Ceiling with Putti and Garlands and a Forshortening of a Balustrade Around an Oculus.; 17th century; Pen and black ink; brush with pink; yellow; blue and gray wash; over traces of graphite; sheet: 5 1/2 x 7 1/2 in. (14 x 19.1 cm); Drawings; Workshop assistant of Michelangelo Colonna (Italian; Ravenna/Como 1604-1687 Bologna)