Wonder what Truman Capote would say...since he wrote the book. :)
Nope — Harper Lee
I had a professor in college who was from Monroeville, Alabama. He was kin to both Harper Lee and Truman Capote, at least I think he was.
He thought they both were amusing.
Harper Lee wrote the book. Ironically, she was indeed the personal secretary for Truman Capote.
If you've spent any time in rural Alabama -- Monroeville, Union Springs, Fitzgerald, Hayneville -- you'll recognize the settings. And the author's affinity for them.