The Adoration of the Shepherds; verso: Sketches, ca. 1532?37, Pen and two hues of brown ink, brown-gray wash, heightened with white gouache; verso: black chalk, sheet: 13 11/16 x 13 1/4 in. (34.7 x 33.7 cm), Drawings, Maarten van Heemskerck (Netherla