Canadian Prisoners of War and Civilian Internees in Europe during the Great War by J. Michael Powell, is an amazing study of the subject of Canadians held in camps in Europe during World War I. It has taken the author years to obtain the hundreds of covers and postcards sent both to and from Canada, as well as collateral photographs, images of postmarks and other items – and that was just the beginning of the effort. The author then conducted an incredible amount of research to not only locate each of the dozens of camps geographically, but also to identify mail right down to the name, rank and unit of the sender or receiver at those camps.J Michael Powell, BSc, FSA, FCIA is an actuary and long-time philatelist who took up the hobby under the tutelage of his father at a young age. After retiring early from professional practice due to health reasons, he took up the study of postal history and has exhibited at the national level on several occasions. His exhibits have included his Canadian POW and internment camp material as well as related foreign subjects. He has also exhibited his collection of the 1934 Jacques Cartier commemorative stamp issue of Canada.