This work is a comprehensive history of the Chelmno camp, located in Poland, which the author argues was a template for other, better known and documented Nazi camps devoted exclusively to the “Final Solution” for Europe’s Jews and others. The manuscript is largely a descriptive narrative, packed with detail, rather than an analytical study. This is appropriate because there has been heretofore very little known about and documented on Chelmno. Montague has been indefatigable in gathering information from Polish, Israeli, English, German, and other archives. This book aims to stand as the standard work on the Chelmno camp.