Q: Passage: Scary Stories to Tell in the Dark is a series of three children's books written by Alvin Schwartz and illustrated by Stephen Gammell. The titles of the books are Scary Stories to Tell in the Dark (1981), More Scary Stories to Tell in the Dark (1984), and Scary Stories 3: More Tales to Chill Your Bones (1991).

Question: Based on this passage, scary stories to tell in the dark artist? Let's give stream of consciousness first:
The relevant information is: Scary Stories to Tell in the Dark is a series of three children's books written by Alvin Schwartz and illustrated by Stephen Gammell. Therefore, the final answer is Stephen Gammell.