Pen a. ink drawing with watercolour, 25 x 35,5 cm, monogr. a. dat. JH 22.10.84 as well as titled, matted and framed under glass. - 'Ems' is an abbreviation for the circuit judge Erich Meyer-Schomann, a collector and friend of Janssen. - One of the most important modern German draughtsmen a. graphic artists. J. studied at the Hamburg Landeskunstschule in A. Mahlau's classes of liberal a. applied arts. He merged the traditions of the Old Masters a. the achievements of modernism to create his own pictorial language.