What is the author's style in This Fiery Trial: The Speeches and Writings of Abraham Lincoln by Abraham Lincoln?

Two perspectives should be discussed: that of the compiler and editor, William Gienapp, and that of Abraham Lincoln himself.

Gienapp was a well-respected Professor of History at Harvard University. He was noted as an authority on nineteenth century America and particularly the Civil War, so he was particularly appropriate to edit this collection of Lincoln's writings. At the same time This Fiery Trial was published (2002), he also released a full biography of Abraham Lincoln.