I would need clarification on which M. Williams you're referring to, as there are several authors with that name or similar initials and surname. Here are a few possibilities: 1. Michael Williams, an author known for his work in the fantasy genre, such as the "Dragonlance" novels. 2. Marcia Williams, a children's book author and illustrator famous for her comic-strip adaptations of classic literature like "Shakespeare's Plays" or "Greek Myths for Young Children." 3. Margo Williams, an author who might be known for genealogy and historical books. 4. Margery Williams, most famously known for "The Velveteen Rabbit." Without specific information, I can't provide an accurate description. Could you please provide more details or clarify which M. Williams you are referencing?