The issues of Reconstruction are not the issues we are hung about.
Their issues were managing the national debt, maintaining a national currency, private job creation, creating a national transportation system, and governing the flood of European immigrants.
The south may have been hung up on a racial caste system, but the rest of the country by passed that problem and got ready for the 20th century.
There is a little bit of this in Guelzo's book, but it is not the story he wants to tell.
Why don't you read the book before telling us what's in it and what he wants to tell.