Gurney's work has appeared in Highlights magazine, Cricket, and on board games (such as Guess Who?) He has illustrated several book series, including The A to Z Mysteries, The Bailey School Kids, and The Calendar Mysteries. Picture book assignments include an adaptation of The Night Before Christmas (1999; reissued in 2006 as a book and audio set narrated by Peter Linz). More recently, he has written and illustrated his own books, Dinosaur Train (2002; no relation) and Fuzzy Baseball (2016).