“The Real Lincoln: A New Look at Abraham Lincoln, His Agenda, and an Unnecessary War” written by Thomas DiLorenzo in 2002.
An alternate point of view.....
your mileage may vary
Here is a response to the Klan from an actual historian:
http://www.amazon.com/Vindicating-Lincoln-Defending-Politics-President/dp/B007K5FYIG
A work that can only deserve praise from people totally ignorant of history or who like the Marxist left seek to distort history just to serve their cause.
Thomas DeLIErenzo is not a figure to recommend. He's a piece of crap who cashes in on the gullible. He took out of context quotes to a level even Gore Vidal could not imagine.