Wonder why Mein Kampf isn't on this list? Seems to me to be very influential in the sense that the ideas behind it led directly to WWII.
In the intro he claims that since Mein Kampf was ignored upon publication and wasn't really read by anyone until Hitler came to power it didn't really hold much influence. If it WAS read in the 1920s and Hitler's rise to power had been averted then it would be influential.