It shows how little the Author and Publisher care about historical accuracy of their book since they did not even attempt to use an accurate photo of the train involved. There are plenty of resources available, which show the Locomotives of the countries involved, so even with a little work they could have found an appropriate photo to put their swastika on. What is really insulting is the fact that they would show a North American locomotive since all of the counties involved (Canada, United States, and Mexico) fought Germany in World War II.
I guess any photo will due when you are pushing the Holocaust story.
The Twentieth Train
The True Story of the Ambush of the Death Train to Auschwitz by Marion Schreiber
Publisher Grove Press
http://www.groveatlantic.com/