"KL: A History of the Nazi Concentration Camps" by Nikolaus Wachsmann is a Hardcover book published by Farrar, Straus & Giroux in 2015. This 880-page book provides a detailed account of the Nazi concentration camps during the Holocaust, offering insights into the history of Europe, particularly Germany, during World War II. The book is written in English and includes illustrations, making it a valuable resource for those interested in modern history and the atrocities committed during the 20th century.