Gumdrop and the Dinosaur: When MR Oldcastle Accidently Turns Gumdrop Into a Time MachiPaperback, 15 August 2015

When Mr Oldcastle accidently turns Gumdrop into a time machine after a trip to the museum with his grandson Dan, they are whisked back in time to the land of the dinosaurs. They soon make lots of new friends, but when a ferocious Tyrranosaurus Rex appears, it's up to Gumdrop to save the day.
Collect all of Gumdrop's adventures
GUMDROP AND THE SECRET SWITCHES;
GUMDROP - ALL AT SEA;
GUMDROP AND THE ELEPHANT.

The real Gumdrop is the author, Val Biro's own car and is the hero of these exciting and magical adventure stories!