Answer:
The purpose of each of the notes documenting the sources is to ensure credibilty and time of the sources.
Step-by-step explanation:
'A Level Playing Field' is a book written by Gerald L. Early. The book is about the first African-American baseball player, Jacckie Robinson. In his book, Early uses multiple resoucres to support his claim about Robinson.
In using these multiple sources and notes, Early is building credibility for himself in his reader's view. Through these sources, one will know Early's narration about Robinson is true and by doing this, Early is also able to make his own voice audible to his readers.