The Lincoln book I’ve found most interesting so far is about his Cooper Union Speech. This one sounds pretty good too.
About the author
Harry is a ferociously good natured eccentric in Duluth Minnesota who detests traitors dressed up as Uncle Sam. You can find somewhat better edited writings of his at the Duluth Reader "contributors." page. The URL is:https://duluthreader.com/contributors/h/84/284-harry-welty