A good read to be sure. You might also be familiar with C.S. Lewis' "Mere Christianity", which contains within it a letter from Hitler beyond the grave. In this letter, he congratulates his followers for pegging their modern-day opponents as Nazis!
Hitler's sequal to Mein Kampf is even more troubling than the first in the series. In it, he unequivocably states that The United States must be subdued in order for the Reich to be preserved. The manuscript was not published, but has ben unveiled. There was a special done on it on The History Channel.
I'm not be surprised by this. Suppose you are a German nationalist of the type of wanting to dominate the world, you see that your country has a lot more potentials than everyone in the civlized world (which in the context of pre-WWII era it meant the West plus Japan). You are certainly far more productive and more talented than Britain, let alone France (even before 1914 Germany already produced four times more steel than Britain, and your universities had more Nobel prizes than anyone else in the world) and your growth seems to be nonstop from the mid 1850s. In other words, you have dominated Europe. The only dark cloud to your lining of ambition must have been the United States - which is developing at the same time and rate as your Vaterland, has twice the population as you, and worse to you, have the same German industrial ethic as you do.
It would be obvious to Euroepan nationalist/imperialist style people that the US poses a threat to their ambition. Indeed I think German leaders as early as Prince Otto von Bismarck or Kaiser William II were already "alarmed" by the rise of the United States. They already knew long ago that Germany won't need to be afraid of Britain, and certainly not France, and not Russia either, but the United States. There were reports (discovered in 2002, almost 100 years later) that William II ordered a study of feasibility of leading a long-range invasion army of 100,000 to invade the US - not doubt he is quite afraid of Teddy Roosevelt.
(About the 2002 invasion historical document, have a look at this article on FR):
How Kaiser Bill planned to invade United States