It was first published in 1960 and is part of the Little Golden Books series.
This book provides examples of:
- Fanboy: Lucky is his too Thunderbolt as usual for this franchise.
- Filthy Fun: Though they don't appear to actually get dirty Penny and Lenny are shown to enjoy digging holes.
- Short Story: Like most other Little Golden Books series.
- Show Within a Show: Thunderbolt as usual for this franchise.
- Unluckily Lucky: Lucky gets lost in the book, but thankfully a policeman comes and takes him home.