Heinz Hajek-Halke: Die Uble Nachrede ( Vile Gossip). 1932/c. 1950, Slver print, 12-3/4 x 11-5/8 in. (324 x 296 mm), flush-mounted, with dedication, date and signature on reverse., Illustrated: Modernist Photographs from the National Gallery of Canada, Thomas 2007, page 88 plate 32; and H. Hajek-Halke: Form aus Licht und Schatten, Gottingen 2005, page 44. w1126j.