The latest BNAPS handbook, “Notes through Barbed Wire” by J. Michael Powell, subtitled “Mail to and from Prisoners Of War, Civilian Internees, Japanese Evacuees and Others in Canadian Internment Camps during World War II” is an extensive survey of the subject of Canadian Internment Mail.Building on the military postmark studies of W.J. Bailey, E.R. Toop and C.D. Sayles and the BNAPS Exhibit Series books by Stephen C. Luciuk and Kenneth V. Ellison, the author has taken a different approach. Focusing strictly on the World War II era, his chapter subjects range from Standard and Special Stationery to Rates, Destinations, Hand-stamps and Postmarks, through Censor and Foreign Markings to seldom seen material emanating from the Administration & Support side of Internment Operations. Extensive use of both contemporary and modern photographs of the various camps adds tremendous additional context to the philatelic material.