history of illustration

A research paper on Newell Convers Wyeth and Norman Rockwell, two great illustrators who made an impact during their time.

How did each artist influence there time? Or did certain period influenced their drawing (why? Gender? Race? Wars?) ? Did they change their drawing styles at all throughout the years? *Add any interesting topics or information

Compare and contract their works, how are they different from each other? What do you admire?

Preferably a creative approach of the paper with interesting topics not just a biography of each of them, really flexible but must have cite sources to back reason up.