Seven inmates of “Operation Bernhard” pose shortly after their liberation. Adolf Burger is in the back row, far left and Max Groen is in the front row, far right. Photo by anonymous (c. May 1945). Photo courtesy of the family of Max Groen. Columbia College Today, May/June 2007. “The Improbable Tale of Krueger’s Men.” https://www.college.columbia.edu/cct_archive/may_june07/features2.html