The following is a list of people from Allied countries suspected of treachery or treason during World War II. It is not a list of Nazi war criminals. Wikipedia*
On the C-SPAN Networks:
Walter Purdy has two videos in the C-SPAN Video Library; the first appearance was a 2002 Forum as a Co-Director. The year with the highest average number of views per program was 2016 with an average of 388 views per program.