The International Tracing Service, directed and administered by the ICRC since 1955, has recently produced a volume of considerable importance after several years work based on documents obtained over the past twenty years. This consists of 612 pages, in addition to an introduction of 50 pages and is entitled, Vorlaufiges Verzeichnis der Haftstätten unter dem Reichsführer-SS, 1933-1945. (Provisional list of concentration camps and their outside detachments, and of their places of detention dependent on the Reichsfiihrer- SS in Germany and the German-occupied territories, 1933- 1945.)