Thunder Helper Thunder Helper from Jago (Jago Silver) Thunder Helper Children's book for the US educational market. Published by McGraw-Hill 2012 gLike Thunder Helper Children's book for the US educational market. Published by McGraw-Hill 2012 Illustrator Lighting Illustration Publishing Share R 7 n Jago (Jago Silver) Children's Book Illustrator at Jago Illustration and Owner, Jago Illustration Cornwall, United Kingdom Follow Contact