Mary Lou Dettmer

From Muppet Wiki

Mary Lou Dettmer is an artist who illustrated the story "The Boy, the Girl and the Jellybeans" in The Sesame Street Storybook and also volumes 8, 9, and 10 of The Sesame Street Library. Dettmer also illustrated Hallmark cards and Whitman Tell-a-Tale titles like Little Red Riding Hood. She currently resides in Racine, Wisconsin.