What type of connection does Scout Finch in To Kill a Mockingbird have with the author of the book?

Harper Lee's own childhood in Monroeville, Alabama, cast the die for her protagonist Scout Finch's upbringing in the fictitious Maycomb, Alabama. Lee experienced the same civil discord and racial injustices that Scout goes through. 

One of the major inspirations for the book came from Lee's exposure to the Scottsboro Trials. In 1931, when Lee was five years old, nine black boys riding a train in Scottsboro, Alabama, were accused of attacking and raping two white...

Harper Lee's own childhood in Monroeville, Alabama, cast the die for her protagonist Scout Finch's upbringing in the fictitious Maycomb, Alabama. Lee experienced the same civil discord and racial injustices that Scout goes through. 

One of the major inspirations for the book came from Lee's exposure to the Scottsboro Trials. In 1931, when Lee was five years old, nine black boys riding a train in Scottsboro, Alabama, were accused of attacking and raping two white girls. The boys were wrongly convicted, and it took decades to clear their names. Their lives were never the same.  Lee watched the injustice of the trials unfold during the same approximate ages as Scout would witness the trial of Tom Robinson in the book. Robinson was also a black man accused and wrongly convicted of raping a white woman. 

For these reasons, Lee's To Kill a Mockingbird can be called semi-autobiographical, as one may infer that the character of Scout was born from her own childhood memories. In fact, the character of Dill is said to be based off Lee's own childhood friend Truman Capote.