IBM and the Holocaust - Edwin Black I read this when I was 15/16 and it gave me nightmares. It was one of the first books on the Holocaust that I had read at the time and I picked it up because of the title. IBM is a recognizable brand and the Holocaust a well-known historic what on earth would they have to do with each other ?

The author goes into detail about the nature of the relationship between IBM and the Nazis, the people involved, the scale of the operation and fact that something so horrendous could have been executed with such organisation; all thanks to IBM. At the time I read it, this book was an eye opener. Today, it's not as suprising.