Author of "When Santa Was A Shaman, The Ancient Origins of Santa Claus & the Christmas Tree," Llewellyn Publications, 1995.
Headed the Amsterdam (Dutch) Resistance Film and Photo Unit, during the Nazi occupation, later known as the Underground Camera.
(2009 - 2010) Book, autobiography of years in Dutch Resistance during WW-2, "De Laatste Huzaar, Resistance without Bullets" . Schoorl, The Netherlands ISBN 978 90 5429 294 4