Considering the source of the above statement, I tend to be skeptical of the assertion. Most likely the issue fails to involve whether or not a different side was offered in those books, but rather involves the openness of one particular individual to acknowledge and consider that different side when it is presented, no matter what its historical merits may be. As evidenced by that individual's behavior here, history matters not when it contradicts his annointing of Lincoln as the secular diety of anti-slavery.
Considering the source of the above statement, I tend to be skeptical of the assertion.
Yeah, well like I say, insults have to suffice when you can't marshal the facts.
Walt