Possible Clues:

• "The Very Hungry Caterpillar" author Eric
• "The Very Busy Spider" author Eric
• "The Very Busy Spider" writer/illustrator
• Children's book author Eric
• "The Very Hungry Caterpillar" writer/illustrator
• "The Grouchy Ladybug" writer/illustrator
• Kid-lit writer/illustrator Eric
• Eric ___, author of 'The Very Lonely Firefly'
• Eric who wrote "The Very Hungry Caterpillar"
• Author Eric whose last name sounds like a first name