Bertie and the Skypainter

Bertie and the Electric Dragonfly, Ed

Bertie and Humble Bumble

Bertie and the Cloudspinner

Bertie, Water Lily, Monsoon and the Dirty Sky

Bertie's Big Idea

Humble Bumble and the Purple Sky Mystery

Dirty Sky at Night, No One's Delight

Bertie the Singing Bat

Bertie Goes Sky High