Photographs of "Pilehuset", Denmark Fifteen small black and white photographs of "Pilehuset", a cottage near Frederiksvaerk, Denmark, sent to Haldane by Erik Tetens Nielsen. Shows various scenes of the inside and exterior of the cottage and surrounding woodland. Photographs of the interior include pitures of dark room and laboratory equipment such as microscopes and x-ray machines. The reverse of each photograph has been annotated. Also includes a note from Nielsen and the original envelope. Jun 1946