The set of correspondence of prisoners held in German concentration camps, internment and transit camps, Gestapo prisons, and POW camps, during and just prior to World War II (2,000 items, mainly letters written or received by prisoners). The full list of items can be found at the finding aids. The collection is available online through the Digital Collections website (public access) as well as at the Gale Publishing (McMaster users only). The Virtual Museum presents a series of case studies that introduce the viewer into the collection.