Scooby-Doo and the Witch's Ghost Original Production Cel and Drawing Signed by Bob Singer: ThornThorn MEDIUM: Original Production Cel on Printed Background and Matching DrawingSIZE: 10. 5" x 9. 5"SIGNED: Hand Signed by Bob Singer SKU: IFA11167 ABOUT THE IMAGE: The Hanna Barbera cartoon, Scooby Doo, Where Are You? was launched in 1969 and has had the longest run of a cartoon series. Over the years its been in 19 TV series (on CBS, ABC, the WB, Cartoon Network and Boomerang) and more than 40 animated films and two live action movies; one grossed