9 books
Quackless Duck's Adventure
Quackless Duck Visits the White House
Quackless Duck Meets Rudolph the Reindeer
Quakless Duck Prays for a New Voice
Quackless Duck Gets a Voice Transplant
Quackless Duck Finds his Pals
Quackless Duck Gets Washed Away
Quackless Duck and His Secret Pals
Budgie and Sissy's Adventure