KL: A History of the Nazi Concentration Camps is a 2015 book by Birkbeck College professor Nikolaus Wachsmann.

For example, some of the first concentration camps set up in 1933 were deliberately located in working-class neighborhoods of Berlin so that the population would learn what happened to Nazi opponents.

[6] Although Jews made up a majority of deaths in concentration camps, they ranged from 10–30% of the population depending on the time period.

[7] The book is a work of synthetic history drawing mainly on published German sources,[1] although it also incorporates the author's archival research.

[6] Wachsmann ends the book with a vignette about Moritz Choinowski, a Polish Jew liberated by the United States Army at Dachau.