Prompt
Create a realistic portrait image of William Cooper Nell, a prominent 19th-century African American historian, abolitionist, and author, sitting in a library or study surrounded by books, with a thoughtful expression, wearing formal attire typical of the era, such as a suit and tie, and possibly holding one of his notable works, like "The Colored Patriots of the American Revolution" or "Services of Colored Americans in the Wars of 1776 and 1812".
